CN214543668U - Improved generation DC power supply system - Google Patents
Improved generation DC power supply system Download PDFInfo
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- CN214543668U CN214543668U CN202023260154.4U CN202023260154U CN214543668U CN 214543668 U CN214543668 U CN 214543668U CN 202023260154 U CN202023260154 U CN 202023260154U CN 214543668 U CN214543668 U CN 214543668U
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Abstract
The utility model discloses an improved generation DC power supply system, include: a rectifier module charges, a control module charges, an intelligent battery module and a feed module, intelligent battery module includes: a plurality of single lithium batteries; the temperature detection unit is respectively connected with each single lithium battery; the voltage detection unit is respectively connected with each single lithium battery; the single control unit is respectively connected with each single lithium battery; and the main control chip is respectively connected with the temperature detection unit, the voltage detection unit and the monomer control unit. The utility model discloses can revise charging voltage through the operating temperature who detects the battery, carry out charge control to the monomer lithium cell through the monomer control unit simultaneously, can eliminate the difference between the monomer lithium cell, avoid the problem of overcharging and putting excessively simultaneously, greatly improve the life of battery.
Description
Technical Field
The utility model relates to a power electronics technical field especially relates to an improved generation DC power supply system.
Background
The direct current power supply system of the power engineering provides an uninterrupted power supply for a transformer substation, the direct current power supply system of the transformer substation still adopts a lead-acid battery as a direct current power supply of an energy storage element at present, and the battery not only causes pollution to the environment, but also has a certain limit on the service life. The lithium battery serving as a new energy source is widely applied to various fields of new energy vehicles, communication and the like, the application of a power system is still in an initial stage, and due to the limitation of a floating charge technology, the service life and the charge-discharge characteristics of a product cannot meet the power development requirement. A lithium battery pack direct current system is adopted in a transformer substation in China, a system protection circuit consisting of a set of non-return diode parallel contactors and a fuse is connected in series on a main circuit of a storage battery pack, and the direct current system is protected when the system is short-circuited, overcharged and overdischarged, but certain risks exist in safety and reliability, and the operation requirements of the transformer substation cannot be met.
In view of the importance of a direct-current power supply system in a transformer substation, the failure probability of the direct-current main loop is increased by connecting the non-return diode and the contactor parallel loop on the main loop of the storage battery in series, and the reliability of the system is reduced. Therefore, traditional lithium battery and BMS wiring do not adapt to the operating mode that DC power supply system lasts the floating charge in the transformer substation, and the BMS function also can not replace DC power supply system monitoring device completely and satisfy transformer substation DC power supply's operation requirement.
Therefore, chinese utility model with patent number 201721447733.5 discloses a novel dc power supply system, which includes: the intelligent battery module comprises a plurality of single lithium batteries and a battery monitoring unit, one end of each single lithium battery is connected in parallel and serves as a charging input port of the intelligent battery module, the other end of each single lithium battery is connected in parallel and serves as a charging output port of the intelligent battery module, the battery monitoring unit is provided with two battery monitoring ports and a battery monitoring output port, the two battery monitoring ports of the battery monitoring unit are connected in parallel and serve as the charging input port and the charging output port of the intelligent battery module, and the battery monitoring output port serves as the charging monitoring port of the intelligent battery module. The single lithium battery adopts a lithium iron phosphate battery. The utility model discloses a pollution problem that the used lead acid battery of direct current power supply system of transformer substation caused the environment and the security problem of using the lithium cell that can not float and fill has been solved effectively.
However, the battery life is not expected due to improper use of the battery, and the main reasons are as follows:
1. the effect of spot placement depth. When the discharging termination control circuit generates control point deviation or failure and can not effectively control discharging, the battery is over-discharged, and the service life of the battery is seriously influenced;
2. influence of discharge current density. The normal discharge current is within the maximum discharge current range allowed by the battery, if the discharge current exceeds the maximum discharge current allowed by the battery, the aging of the battery is accelerated, and the service life of the battery is influenced;
3. the influence of the degree of overcharge. When the charging voltage is higher, the battery can be accelerated to be worn during the overcharge, and the service life of the battery is shortened;
4. the influence of temperature. The service life of the battery changes along with the temperature change in a certain temperature range, and when the temperature of the battery exceeds the rated range, the thermal runaway failure of the battery is caused, and the service life of the battery is also shortened.
The applicant has therefore sought and studied advantageously to solve the above-mentioned problems, in the context of which the technical solutions to be described below have been made.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem who solves: the improved direct-current power supply system is provided for overcoming the defects in the prior art, and solves the problem that the service life of the battery module is shortened due to the fact that the existing intelligent battery module is overcharged, overdischarged and unbalanced in single lithium batteries.
The utility model provides a technical problem can adopt following technical scheme to realize:
an improved dc power supply system comprising:
the charging rectifying module is used for converting alternating current into direct current and is provided with an alternating current input port and a direct current output port, and the alternating current input port of the charging rectifying module is connected with an alternating current power supply;
the charging control module is provided with a current input port, a current output port and a charging control port, and the charging input port of the charging control module is connected with the direct current output port of the charging rectifying module;
the intelligent battery module is provided with a charging input port and a charging output port, and the charging input port of the intelligent battery module is connected with the current output port of the charging control module; and
the feed module is provided with a feed input port and a feed output port, the feed input port of the feed module is connected with the charging output port of the intelligent battery module, and the feed output port of the feed module is connected with electric equipment and used for transmitting the electric energy stored in the intelligent battery module to the electric equipment; it is characterized in that the preparation method is characterized in that,
the smart battery module includes:
one ends of the single lithium batteries are connected in parallel and used as a charging input port of the intelligent battery module, and the other ends of the single lithium batteries are connected in parallel and used as a charging output port of the intelligent battery module;
the temperature detection unit is respectively connected with each single lithium battery and is used for acquiring a temperature signal of each single lithium battery in real time;
the voltage detection unit is respectively connected with each single lithium battery and is used for acquiring a voltage signal of each single lithium battery in real time;
the single control unit is respectively connected with each single lithium battery and is used for respectively controlling the charging of each single lithium battery; and
the main control chip, the main control chip respectively with temperature detecting element, voltage detecting element and monomer the control unit connection are used for receiving on the one hand the temperature signal that the temperature detecting element gathered with the voltage signal that the voltage detecting element gathered, on the other hand according to received temperature signal and voltage signal output control signal send to monomer the control unit, through monomer the control unit carries out charge control to each monomer lithium cell.
Due to the adoption of the technical scheme, the beneficial effects of the utility model reside in that: the utility model discloses can revise charging voltage through the operating temperature who detects the battery, carry out charge control to the monomer lithium cell through the monomer control unit simultaneously, can eliminate the difference between the monomer lithium cell, avoid the problem of overcharging and putting excessively simultaneously, greatly improve the life of battery.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, 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 creative efforts.
Fig. 1 is an electrical schematic diagram of the present invention.
FIG. 2 is a schematic structural view of the intelligent battery module of the present invention
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
Referring to fig. 1, an improved dc power supply system is shown, which includes a charging rectifier module 100, a charging control module 200, an intelligent battery module 300, and a power feeding module 400.
The charging rectifying module 100 has an ac input port 110 and a dc output port 120, and the ac input port 110 of the charging rectifying module 100 is connected to an ac power source for converting ac power into dc power to provide power for the whole dc power system.
The charging control module 200 has a current input port 210, a current output port 220 and a charging control port 230, and the charging input port 230 of the charging control module 200 is connected to the dc output port 120 of the charging rectifier module 100. The charging control module 200 provides power to the smart battery module 300 and performs charging and discharging management.
The intelligent battery module 300 is installed in the battery cabinet and has a charging input port 310 and a charging output port 320, and the charging input port 310 of the intelligent battery module 300 are connected with the current output port 220 of the charging control module 200.
The feeding module 400 is installed in a feeding cabinet, and has a feeding input port 410 and a feeding output port 420, the feeding input port 410 of the feeding module 400 is connected with the charging output port 320 of the intelligent battery module 300, and the feeding output port 420 thereof is connected with the electric equipment, for transmitting the electric energy stored in the intelligent battery module 300 to the electric equipment.
Referring to fig. 2, the smart battery module 300 includes a plurality of unit lithium batteries 301, a temperature detection unit 302, a voltage detection unit 303, a unit control unit 304, and a main control chip 305. One end of each of the plurality of single lithium batteries 301 is connected in parallel and serves as a charging input port 310 of the intelligent battery module 300, and the other end thereof is connected in parallel and serves as a charging output port 320 of the intelligent battery module 300. In the present embodiment, the single lithium battery 301 is preferably a lithium iron phosphate battery. The temperature detection unit 302 is respectively connected to each single lithium battery 301, and is configured to collect a temperature signal of each single lithium battery 301 in real time. The voltage detection unit 303 is connected to each single lithium battery 301, and is configured to collect a voltage signal of each single lithium battery 301 in real time. The unit control units 304 are respectively connected to each of the single lithium batteries 301, and are configured to respectively perform charging control on each of the single lithium batteries 301. The main control chip 305 is connected to the temperature detection unit 302, the voltage detection unit 303 and the cell control unit 304, and is configured to receive a temperature signal acquired by the temperature detection unit 302 and a voltage signal acquired by the voltage detection unit 303, output a control signal to the cell control unit 304 according to the received temperature signal and voltage signal, and perform charging control on each of the single lithium batteries 301 through the cell control unit 304.
The utility model discloses can revise charging voltage through the operating temperature who detects the battery, carry out charge control to the monomer lithium cell through the monomer control unit simultaneously, can eliminate the difference between the monomer lithium cell, avoid the problem of overcharging and putting excessively simultaneously, greatly improve the life of battery.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. The transformer substation has been solved and has been used security, the reliability problem that the lithium cell brought, has improved the life and the technical economy of battery, the utility model discloses do not receive the restriction of above-mentioned embodiment, the description only is the explanation in above-mentioned embodiment and the description the utility model discloses a principle, under the prerequisite that does not deviate from the spirit and the scope of the utility model, the utility model discloses still can have various changes and improvement, these changes and improvement all fall into the protection the utility model discloses the within range. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. An improved dc power supply system comprising:
the charging rectifying module is used for converting alternating current into direct current and is provided with an alternating current input port and a direct current output port, and the alternating current input port of the charging rectifying module is connected with an alternating current power supply;
the charging control module is provided with a current input port, a current output port and a charging control port, and the charging input port of the charging control module is connected with the direct current output port of the charging rectifying module;
the intelligent battery module is provided with a charging input port and a charging output port, and the charging input port of the intelligent battery module is connected with the current output port of the charging control module; and
the feed module is provided with a feed input port and a feed output port, the feed input port of the feed module is connected with the charging output port of the intelligent battery module, and the feed output port of the feed module is connected with electric equipment and used for transmitting the electric energy stored in the intelligent battery module to the electric equipment; it is characterized in that the preparation method is characterized in that,
the smart battery module includes:
one ends of the single lithium batteries are connected in parallel and used as a charging input port of the intelligent battery module, and the other ends of the single lithium batteries are connected in parallel and used as a charging output port of the intelligent battery module;
the temperature detection unit is respectively connected with each single lithium battery and is used for acquiring a temperature signal of each single lithium battery in real time;
the voltage detection unit is respectively connected with each single lithium battery and is used for acquiring a voltage signal of each single lithium battery in real time;
the single control unit is respectively connected with each single lithium battery and is used for respectively controlling the charging of each single lithium battery; and
the main control chip, the main control chip respectively with temperature detecting element, voltage detecting element and monomer the control unit connection are used for receiving on the one hand the temperature signal that the temperature detecting element gathered with the voltage signal that the voltage detecting element gathered, on the other hand according to received temperature signal and voltage signal output control signal send to monomer the control unit, through monomer the control unit carries out charge control to each monomer lithium cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023260154.4U CN214543668U (en) | 2020-12-29 | 2020-12-29 | Improved generation DC power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023260154.4U CN214543668U (en) | 2020-12-29 | 2020-12-29 | Improved generation DC power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214543668U true CN214543668U (en) | 2021-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023260154.4U Expired - Fee Related CN214543668U (en) | 2020-12-29 | 2020-12-29 | Improved generation DC power supply system |
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| Country | Link |
|---|---|
| CN (1) | CN214543668U (en) |
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2020
- 2020-12-29 CN CN202023260154.4U patent/CN214543668U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211029 Termination date: 20211229 |