CN218385365U - Lead-acid battery new and old mixed use balance circuit structure - Google Patents
Lead-acid battery new and old mixed use balance circuit structure Download PDFInfo
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- CN218385365U CN218385365U CN202222033337.5U CN202222033337U CN218385365U CN 218385365 U CN218385365 U CN 218385365U CN 202222033337 U CN202222033337 U CN 202222033337U CN 218385365 U CN218385365 U CN 218385365U
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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
Abstract
The utility model discloses a lead-acid battery new and old mixed use balance circuit structure, which comprises a new storage battery pack connecting end, an internal resistance balance circuit, a voltage acquisition circuit, a current acquisition circuit, an internal resistance acquisition circuit, a temperature acquisition circuit and a monitoring unit; the internal resistance balancing circuit comprises a fixed resistor, a switching circuit, an internal resistance detection circuit and a control drive circuit. The new storage battery adopting the internal resistance balancing circuit can automatically adjust the internal resistance to a parameter level close to the average internal resistance of the old storage battery, so that the charging and discharging data are more balanced under the working condition that the new storage battery and the old storage battery are used together, and the service life of the old storage battery is prolonged.
Description
Technical Field
The utility model belongs to the technical field of electric power, concretely relates to new and old balanced circuit structure that uses together of lead acid battery.
Background
The valve-regulated lead-acid storage battery serves as a key backup power supply in a direct-current system of a power plant, and the service life of the general lead-acid storage battery is about 10 years. There are always some cells in the same group of cells that are preferentially damaged during long-term use due to differences in materials and processes. The damaged internal resistance and partial pressure of the battery cannot be matched with the original battery, so that the whole battery cannot be charged and discharged normally, and the safe power supply of the direct current system is not guaranteed.
Lead-acid batteries in a direct current system of a power plant generally adopt a 2V voltage system, each group of batteries has more than 100, and the cost of replacing the whole battery pack is very high when individual batteries in one battery pack are damaged. If a new battery of the same type of the same manufacturer is directly replaced, the over-charging and over-discharging of the old battery during the charging and discharging of the whole battery can be caused due to the difference of the internal resistances of the batteries, and the aging of the whole battery pack is accelerated.
Consequently to the service problem of power plant direct current system backup battery group, it is very necessary to carry out the research of new and old lead-acid batteries hybrid balancing circuit, the utility model discloses based on the old group battery of protection, the principle of the whole group battery value of at utmost performance, the internal resistance that will newly add the battery increases an internal resistance regulating circuit and realizes new and old internal resistance matching of group battery, under the same charge-discharge current, guarantees the voltage balance of whole group battery.
SUMMERY OF THE UTILITY MODEL
The utility model has the advantages of the utility model provides a lead acid battery is new and old to use balanced circuit structure thoughtlessly, and this structure can realize the thoughtlessly using of new and old battery to reach the purpose that prolongs whole group battery life-span.
In order to achieve the technical purpose, the utility model discloses a realize through following technical scheme:
a lead-acid battery new and old mixed use balanced circuit structure comprises: the device comprises an old storage battery pack connecting end, a new storage battery pack connecting end, an internal resistance adjusting circuit, a voltage collecting circuit, a current collecting circuit, an internal resistance collecting circuit, a temperature collecting circuit and a monitoring unit, wherein the internal resistance adjusting circuit, the voltage collecting circuit, the current collecting circuit, the internal resistance collecting circuit, the temperature collecting circuit and the monitoring unit are connected in series with the new storage battery pack;
the connecting end of the old storage battery pack comprises a positive electrode end and a negative electrode end, and the positive electrode end and the negative electrode end are respectively connected with the positive electrode end and the negative electrode end of the other old storage battery pack;
the connecting end of the new storage battery pack comprises a positive end and a negative end, and the positive end and the negative end are respectively connected with the positive end and the negative end of the internal resistance regulating circuit;
the connecting end of the new storage battery pack is connected with the internal resistance regulating circuit in series to form a first branch circuit; the connecting end of the old storage battery pack, the internal resistance regulating circuit and the new storage battery pack form a second branch circuit which is connected in series;
preferably, the voltage, internal resistance and temperature detection circuit is connected with each battery in parallel, and the current detection circuit is connected with the whole battery pack in series
Preferably, the monitoring unit is connected with the acquisition circuit of each battery in parallel on a communication bus.
The utility model has the advantages that:
the utility model compares the internal resistance difference of the new battery pack and the old battery pack, adjusts the internal resistance of the new battery pack, and gives an alarm to the lagging monomer in time; and in the charging process, the battery pack is monitored in real time. Under the scheme, the problem of overcharge of the storage battery is effectively avoided, the adverse effect of mixed use of new and old batteries is eliminated, and meanwhile, the overall service life of the storage battery pack is obviously prolonged due to accurate charge and discharge control.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments 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 it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a new and old mixed balancing circuit of a lead-acid battery;
FIG. 2 is a schematic diagram of the circuit structure adjusting principle of the present invention;
FIG. 3 is a schematic diagram of a battery voltage sampling circuit;
FIG. 4 is a schematic diagram of a sampling circuit of the battery circuit;
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 only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
Example 1
A lead-acid battery new and old mixed use balanced circuit structure comprises: the system comprises an old storage battery pack connecting end, a new storage battery pack connecting end, an internal resistance adjusting circuit, a voltage collecting circuit, a current collecting circuit, an internal resistance collecting circuit, a temperature collecting circuit and a monitoring unit, wherein the internal resistance adjusting circuit, the voltage collecting circuit, the current collecting circuit, the internal resistance collecting circuit, the temperature collecting circuit and the monitoring unit are connected in series with the new storage battery pack;
the connecting end of the old storage battery pack comprises a positive end and a negative end, and the positive end and the negative end are respectively connected with the positive end and the negative end of the other old storage battery pack;
the connecting end of the new storage battery pack comprises a positive end and a negative end, and the positive end and the negative end are respectively connected with the positive end and the negative end of the internal resistance regulating circuit;
the connecting end of the new storage battery pack is connected with the internal resistance regulating circuit in series to form a first branch circuit; the connecting end of the old storage battery pack, the internal resistance regulating circuit and the new storage battery pack form a second branch circuit which is connected in series;
preferably, the voltage, internal resistance and temperature detection circuit is connected with each battery in parallel, and the current detection circuit is connected with the whole battery pack in series
Preferably, the monitoring unit is connected with the acquisition circuit of each battery in parallel on a communication bus.
Example 2
A monitoring method for a new and old mixed balanced circuit structure of a lead-acid battery comprises the following steps:
s1: detecting internal resistance data of each battery in the old storage battery pack;
s2: judging whether the impedance of the old battery pack is in a normal range specified by a manufacturer;
s3: calculating the average impedance of the old battery pack;
s4: the balancing circuit is adjusted to match the output impedance of the new cell to the average impedance of the old cell stack.
Preferably, the monitoring unit processes the data obtained in S1 to S3 and sends an internal resistance adjustment command to the new battery pack.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention disclosed above are intended to aid in the description of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (3)
1. A lead-acid battery new and old mixed use balanced circuit structure is characterized by comprising: the system comprises an old storage battery pack connecting end, a new storage battery pack connecting end, an internal resistance adjusting circuit, a voltage collecting circuit, a current collecting circuit, an internal resistance collecting circuit, a temperature collecting circuit and a monitoring unit, wherein the internal resistance adjusting circuit, the voltage collecting circuit, the current collecting circuit, the internal resistance collecting circuit, the temperature collecting circuit and the monitoring unit are connected in series with the new storage battery pack;
the connecting end of the old storage battery pack comprises a positive end and a negative end, and the positive end and the negative end are respectively connected with the positive end and the negative end of the other old storage battery pack;
the connecting end of the new storage battery pack comprises a positive end and a negative end, and the positive end and the negative end are respectively connected with the positive end and the negative end of the internal resistance regulating circuit;
the connecting end of the new storage battery pack is connected with the internal resistance regulating circuit in series to form a first branch circuit; and the connecting end of the old storage battery pack, the internal resistance regulating circuit and the new storage battery pack form a second branch circuit which is connected in series.
2. The balancing circuit structure for the mixed use of new and old lead-acid batteries according to claim 1, wherein the voltage, internal resistance and temperature detection circuits are connected in parallel with each battery, and the current detection circuit is connected in series with the whole battery pack.
3. The new and old lead-acid battery balancing circuit structure of claim 1, wherein the monitoring unit is connected in parallel with the acquisition circuit of each battery on a communication bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222033337.5U CN218385365U (en) | 2022-08-03 | 2022-08-03 | Lead-acid battery new and old mixed use balance circuit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222033337.5U CN218385365U (en) | 2022-08-03 | 2022-08-03 | Lead-acid battery new and old mixed use balance circuit structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218385365U true CN218385365U (en) | 2023-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222033337.5U Active CN218385365U (en) | 2022-08-03 | 2022-08-03 | Lead-acid battery new and old mixed use balance circuit structure |
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| Country | Link |
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| CN (1) | CN218385365U (en) |
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2022
- 2022-08-03 CN CN202222033337.5U patent/CN218385365U/en active Active
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