CN210120206U - Electronic battery device - Google Patents
Electronic battery device Download PDFInfo
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- CN210120206U CN210120206U CN201921051784.5U CN201921051784U CN210120206U CN 210120206 U CN210120206 U CN 210120206U CN 201921051784 U CN201921051784 U CN 201921051784U CN 210120206 U CN210120206 U CN 210120206U
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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 an electronic battery device for carry out isolation protection to the lagging battery monomer in the storage battery who forms by a plurality of battery monomer series connection, electronic battery device includes: the clamping device comprises a power supply module, a clamping module, a positive input terminal, a negative input terminal, a positive output terminal and a negative output terminal; the two ends of the clamping module are respectively connected to a positive output terminal and a negative output terminal, and the voltage between the positive output terminal and the negative output terminal is clamped to a first preset voltage; the input end of the power supply module is connected to the positive input terminal and the negative input terminal, and the output end of the power supply module is connected to the positive output terminal and the negative output terminal, and the voltage input by the input end is converted into a second preset voltage and then output through the output end, so that the storage battery pack with the performance reduction of the battery monomer can effectively supply power for load equipment, and the storage battery pack with the performance reduction of the battery monomer is prevented from being replaced.
Description
Technical Field
The utility model relates to an electron electric power field especially relates to an electronic battery device.
Background
At present, in a storage battery pack, each battery cell usually works in series, however, when the storage battery pack works in series, along with the service time of the storage battery pack, the problem that the performance of individual battery cells is seriously reduced (for example, the battery capacity lags behind other battery cells) easily occurs, so that the endurance time of the whole storage battery pack is not up to the standard, and the storage battery pack cannot effectively supply power to ground load equipment.
Conventionally, the entire group of storage batteries is replaced to ensure that the load equipment is normally powered. The normal power supply of the load equipment is ensured to be higher in cost through a traditional method, and if the replaced storage battery pack is not well treated, the environmental protection pressure is increased.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides an electronic battery device to make there be the storage battery that battery monomer performance descends can be effectively for the load equipment power supply, avoid there being the storage battery that battery monomer performance descends to be changed.
An electronic battery device for isolating and protecting lagging battery cells in a storage battery pack formed by connecting a plurality of battery cells in series, comprising: the clamping device comprises a power supply module, a clamping module, a positive input terminal, a negative input terminal, a positive output terminal and a negative output terminal;
the two ends of the clamping module are respectively connected to a positive output terminal and a negative output terminal, and the voltage between the positive output terminal and the negative output terminal is clamped to a first preset voltage;
the input end of the power supply module is connected to the positive input terminal and the negative input terminal, the output end of the power supply module is connected to the positive output terminal and the negative output terminal, and the voltage input by the input end is converted into a second preset voltage and then is output through the output end.
Preferably, the ratio of the first preset voltage to the normal terminal voltage of the lagging battery cell is between 1: 1-1: 1.5.
Preferably, the second preset voltage is equal to a normal terminal voltage of the lagging battery cell.
Preferably, the power module is a DCDC isolated power supply.
Preferably, the turn-on voltage of the clamping module is greater than the terminal voltage of the battery cell.
Preferably, the clamping module comprises a plurality of diodes connected in series, and the anodes of the diodes connected in series are connected to the positive output terminal and the cathodes of the diodes connected in series are connected to the negative output terminal.
Preferably, the number n of diodes in the clamping module and the rated output voltage S of the lagging battery cell satisfy the following relationship: n is 2 × S, where n is an integer greater than or equal to 1.
Preferably, the rated output voltage of the lagging battery cell is 2V, and the number of the diodes in the clamping module is 4.
Preferably, the rated output voltage of the lagging battery cell is 12V, and the number of the diodes in the clamping module is 24.
Preferably, a plurality of cells in the battery pack have the same terminal voltage.
According to the device, the storage battery pack is externally connected with the electronic battery device comprising the power supply module and the clamping module, so that other normal single batteries in the storage battery pack can be charged and discharged normally, the capacity can be utilized, the storage battery pack with the performance reduction of the single batteries can continuously and effectively supply power to load equipment, and the storage battery pack with the performance reduction of the single batteries is prevented from being replaced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic diagram of a system structure of an electronic battery device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an electronic battery device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The embodiment of the utility model provides a be applied to like the system architecture sketch map of fig. 1. The system structure diagram of fig. 1 includes an electronic battery device 1, a storage battery 2 (the storage battery includes at least one lagging battery cell 21) formed by connecting a plurality of battery cells in series, a dc load 3 and a charger 4. The plurality of cells in the above-described secondary battery pack 2 may have the same terminal voltage. Of course, in practical applications, the terminal voltages of the plurality of cells in the battery pack may also be different.
The electronic battery device 1 includes a power supply module 11, a clamping module 12, a negative output terminal 5, a positive output terminal 6, a positive input terminal 7, and a negative input terminal 8. When the electronic battery device 1 is used, the positive input terminal 7 can be connected to the positive pole of the storage battery pack 2, and the negative input terminal 8 can be connected to the negative pole of the storage battery pack 2; meanwhile, the positive output terminal 6 is connected to the positive electrode of the lagging battery cell 21, and the negative output terminal 5 is connected to the negative electrode of the lagging battery cell 21. Of course, in practical applications, the positive input terminal and the negative input terminal may be connected to separate dc power sources, and the electronic battery device may be powered by the separate dc power sources.
Specifically, in one embodiment, the two ends of the clamping module 12 are respectively connected to the positive output terminal 6 and the negative output terminal 5, and are clamped to a first preset voltage when the voltage between the positive output terminal 6 and the negative output terminal 5 exceeds the first preset voltage. That is, the voltage between the positive output terminal 6 and the negative output terminal 5 may not exceed the first preset voltage by the clamping module 12, so that when the positive output terminal 6 and the negative output terminal 5 are connected to the lagging battery cell 21, the terminal voltage of the lagging battery cell 21 may not reach the first preset voltage (for example, when the secondary battery is charged).
The power module 11 has an input end connected to the positive input terminal 7 and the negative input terminal 8, and an output end connected to the positive output terminal 6 and the negative output terminal 5, and converts a voltage input from the input end into a second preset voltage and outputs the second preset voltage through the output end. When the positive output terminal 6 and the negative output terminal 5 are connected to two ends of the storage battery pack, the power module 11 obtains power from the storage battery pack 2, the input voltage of the power module is related to the total voltage of the storage battery pack 2, the output voltage of the power module is related to the rated output voltage of the battery, and for a 48V communication base station direct current system, the input range of the power module 11 is DC 36V-72V, namely the total input range of the electronic battery device 1, and the output voltage is a constant value DC 2V.
Because the performance of individual single batteries in the storage battery pack 2 is seriously reduced (the capacity is lagged), when the storage battery pack 2 discharges, the voltage of the lagged single batteries 21 is reduced to be below 1.8V in a short time, and the voltage is reduced to be about 0V under an extreme condition, so that the voltage of the storage battery pack 2 is rapidly reduced in a short time and is reduced to be below one-time power-down voltage, the backup duration of the whole storage battery pack 2 is not up to standard, the direct-current load 3 equipment cannot be effectively supplied with power, and the storage electric quantity of the single batteries with normal performance (capacity) in the storage battery pack cannot be utilized. In the embodiment, the electronic battery device 1 comprising the power module 11 and the clamping module 12 is externally connected to the storage battery pack, so that when the storage battery pack 2 is charged, the input voltage of the lagging battery monomer 21 is rapidly increased, and the clamping module 12 clamps the terminal voltage of the lagging battery monomer 21 to a first preset voltage through the positive output terminal 6 and the negative output terminal 5, so as to prevent the voltage of the lagging battery monomer 21 from being continuously increased; when the storage battery pack 2 discharges, the voltage of the lagging battery monomer 21 falls to a discharge threshold level, the power module 11 is pulled up to a second preset voltage through the terminal voltage of the lagging battery monomer 21, so that the output current of the lagging battery is automatically adjusted to a preset current value, the voltage of the lagging battery monomer 21 is prevented from falling, the input voltage and the output voltage of the whole storage battery pack 2 are maintained at normal values, other normal single batteries in the storage battery pack 2 can be charged and discharged normally, the capacity is utilized, the storage battery pack 2 with the performance reduction of the battery monomer can continue to effectively supply power for the direct current load 3 device, and the storage battery pack with the performance reduction of the battery monomer is prevented from being replaced.
Specifically, the power module 11, the clamping module 12, the positive input terminal 7, the negative input terminal 8, the positive output terminal 6, and the negative output terminal 5 may be integrated into a circuit board, the circuit board may be disposed in an insulating box, and the insulating box has sockets for respectively connecting the positive input terminal 7, the negative input terminal 8, the positive output terminal 6, and the negative output terminal 5, and the electronic battery device 1 may be connected to the storage battery pack 2 and the lag battery unit 21 through a connection cable (which may have a conductive wire clamp) plugged into the sockets. Of course, the above-mentioned socket can also be replaced by connecting a connecting cable with a connecting conductive clip.
In an embodiment of the present invention, a ratio of the first predetermined voltage to a normal terminal voltage (i.e. a rated output voltage) of the lagging battery cell 21 is between 1: 1-1: 1.5. In this way, it is ensured that the total terminal voltage of the secondary battery pack 2 is normal during charging.
The second preset voltage may be equal to the normal terminal voltage of the lagging battery cell 21. Thus, when the secondary battery pack 2 is discharged, the total terminal voltage of the secondary battery pack is not different from that in the normal state.
In order to avoid discharging the lagging battery cells 21 through the power module, the power module 11 may employ a DCDC isolated power supply.
Moreover, the on-state voltage of the clamping module 12 is greater than the terminal voltage of the battery cell (i.e. the rated output voltage of the lagging battery cell 21), so that the clamping module 12 does not discharge in the discharge state of the storage battery pack 2, and abnormal discharge of the lagging battery cell 21 is avoided.
Preferably, the clamping module 12 comprises a plurality of diodes connected in series, and the anodes of the diodes connected in series are connected to the positive output terminal, and the cathodes of the diodes connected in series are connected to the negative output terminal. Because each diode has a conducting voltage, the conducting voltage of the clamping module can be larger than the terminal voltage of the single battery after the diodes are connected in series.
In order to make the conducting voltage of the clamping module 12 greater than the terminal voltage of the battery cell, the number n of diodes in the clamping module 12 and the rated output voltage S of the lagging battery cell 21 (i.e. the terminal voltage of the lagging battery cell 21 at normal time) satisfy the following relationship: n is 2 × S, where n is an integer greater than or equal to 1.
Specifically, when the normal terminal voltage of the lagging battery cell 21 is 2V, the number of the diodes in the clamping module 12 is 4; when the normal end of the lagging battery cell 21 is 12V, the number of the diodes in the clamping module is 24.
Further, a plurality of battery cells in the above-described battery pack 2 may have the same terminal voltage.
The operation principle of the electronic battery device will be described below by taking as an example a secondary battery formed by connecting 24 battery cells in series, each of which has a terminal voltage of 2V (the total dc voltage of the secondary battery is the sum of the battery voltages, i.e., E ∑ Ui ═ 48V):
(1) in the discharge state
When the storage battery pack 2 is discharging (i.e. supplying power to a load), the terminal voltage U of each battery cell is equal to E-IR, and the internal resistance R of the lagging battery cell 21 becomes large due to the performance degradation of the lagging battery cell 21, so that the terminal voltage of the lagging battery cell 21 is zero or even a negative value; the terminal voltage of the lagging battery unit 21 will be reduced to zero or even negative, which causes the total voltage of the storage battery pack 2 to be lower than 45V (the first power-off voltage) to generate a power-down phenomenon, and the capacity of other normal single batteries is not effectively utilized.
When the electronic battery device 1 is connected to the two ends of the storage battery through the positive input terminal and the negative input terminal, and is connected to the two ends of the lagging battery cell 21 through the positive output terminal and the negative output terminal, because the output resistance of the power supply module is very small, and the output voltage of the power supply module is constantly 2V, in the discharging process, if the lagging battery cell 21 decreases the cell voltage due to the increase of the output current (discharging current) of the storage battery cell, the power supply module can automatically increase the output current, the actual output current of the lagging battery cell 21 can be smaller than the discharging current of the storage battery cell 2, in an extreme case, the output current of the power supply module is the battery pack discharging current, and at this time, the actual output current of the lagging battery cell 21 is zero. Since the turn-on voltage of the clamp module 12 is greater than 2V, the clamp module will not turn on in the discharge state.
Through the mode, even if the output current of the lagging battery monomer 21 is small and even the output current is zero, the output voltage of the lagging battery monomer 21 cannot be reduced to below 1.8V, the output voltage of the whole storage battery pack can still be maintained at a normal value, other normal battery monomers in the storage battery pack 2 can normally discharge, and the capacity can be utilized.
(2) In the state of charge
Because the internal resistance of the lagging battery monomer 21 is very large, the voltage at the input end of the storage battery 2 is faster than that of the normal battery monomer in the charging process, and an over-high voltage is generated, when the voltage at the input end of the lagging battery monomer 21 reaches the conducting voltage (for example, 2.4V) of the clamping module 12, the voltage at the end of the lagging battery monomer 21 is kept constant and cannot continuously rise due to the conduction of the clamping module 12, and the safety accident caused by heat unbalance due to heating is avoided.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions.
The above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. An electronic battery device for isolating and protecting lagging battery cells in a battery pack formed by connecting a plurality of battery cells in series, the electronic battery device comprising: the clamping device comprises a power supply module, a clamping module, a positive input terminal, a negative input terminal, a positive output terminal and a negative output terminal;
the two ends of the clamping module are respectively connected to a positive output terminal and a negative output terminal, and the voltage between the positive output terminal and the negative output terminal is clamped to a first preset voltage;
the input end of the power supply module is connected to the positive input terminal and the negative input terminal, the output end of the power supply module is connected to the positive output terminal and the negative output terminal, and the voltage input by the input end is converted into a second preset voltage and then is output through the output end.
2. The electronic battery device of claim 1, wherein a ratio of the first predetermined voltage to a normal terminal voltage of the lagging battery cell is between 1: 1-1: 1.5.
3. The electronic battery device of claim 1, wherein the second predetermined voltage is equal to a normal terminal voltage of the lagging battery cell.
4. The electronic battery device of claim 1, wherein the power module is a DCDC isolated power supply.
5. The electronic battery device of claim 4, wherein the turn-on voltage of the clamping module is greater than the terminal voltage of the battery cell.
6. The electronic battery device of claim 5, wherein the clamping module comprises a plurality of series-connected diodes, and wherein anodes of the series-connected diodes are connected to the positive output terminal and cathodes of the series-connected diodes are connected to the negative output terminal.
7. The electronic battery device according to claim 6, wherein the number n of diodes in the clamping module and the rated output voltage S of the lagging battery cell satisfy the following relationship: n is 2 × S, where n is an integer greater than or equal to 1.
8. The electronic battery device according to claim 4, wherein the rated output voltage of the lagging battery cell is 2V, and the number of the diodes in the clamping module is 4.
9. The electronic battery device according to claim 6, wherein the rated output voltage of the lagging battery cell is 12V, and the number of the diodes in the clamping module is 24.
10. The electronic battery device as recited in any of claims 1-9, wherein a plurality of cells in the battery pack have the same terminal voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921051784.5U CN210120206U (en) | 2019-07-05 | 2019-07-05 | Electronic battery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921051784.5U CN210120206U (en) | 2019-07-05 | 2019-07-05 | Electronic battery device |
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| CN210120206U true CN210120206U (en) | 2020-02-28 |
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| CN201921051784.5U Active CN210120206U (en) | 2019-07-05 | 2019-07-05 | Electronic battery device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110474113A (en) * | 2019-07-05 | 2019-11-19 | 深圳市普禄科智能检测设备有限公司 | Electronic cell device |
| US20210382115A1 (en) * | 2020-06-03 | 2021-12-09 | Robert Bosch Gmbh | Cost-effective yet still precise ascertainment of the degradation state of a rechargeable battery |
-
2019
- 2019-07-05 CN CN201921051784.5U patent/CN210120206U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110474113A (en) * | 2019-07-05 | 2019-11-19 | 深圳市普禄科智能检测设备有限公司 | Electronic cell device |
| US20210382115A1 (en) * | 2020-06-03 | 2021-12-09 | Robert Bosch Gmbh | Cost-effective yet still precise ascertainment of the degradation state of a rechargeable battery |
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