CN113746313A - Method for controlling power-on and power-off of switching power supply in energy storage high-voltage box - Google Patents
Method for controlling power-on and power-off of switching power supply in energy storage high-voltage box Download PDFInfo
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- CN113746313A CN113746313A CN202111147326.3A CN202111147326A CN113746313A CN 113746313 A CN113746313 A CN 113746313A CN 202111147326 A CN202111147326 A CN 202111147326A CN 113746313 A CN113746313 A CN 113746313A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/36—Means for starting or stopping converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/10—Control circuit supply, e.g. means for supplying power to the control circuit
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a method for controlling the power-on and power-off of a switching power supply in an energy storage high-voltage box, which comprises the step of jointly optimizing the existing high-voltage box scheme by using a 3845 power supply chip as a core circuit and combining a 3845 starting circuit, a 3845 stabilizing circuit and a 3845 closing circuit. The invention has the beneficial effects that: the independence of power supply of the switching power supply of the energy storage high-voltage box is improved; a universal change-over switch is used, and the convenience and the safety of power on and power off of the high-voltage box are realized by combining a 3845 starting circuit, a 3845 stabilizing circuit and a 3845 closing circuit.
Description
Technical Field
The invention relates to a switching power supply up-and-down control method, in particular to a switching power supply up-and-down control method in an energy storage high-voltage box, and belongs to the technical field of energy storage systems.
Background
The battery cluster of the existing energy storage system is formed by serially connecting a plurality of batteries PACK, the plurality of PACK are placed on a battery cluster frame, the whole battery is always connected to a positive electrode and a negative electrode of a high-voltage box in a negative mode, a BMS controller and a switch power supply are arranged in the high-voltage box, and the BMS controller completes the linkage of the battery cluster and a PCS through controlling a switch of a relay in the high-voltage box to charge and discharge the battery cluster.
However, the switching power supply inside the conventional high-voltage box is connected with AC power, and the switching power supply DC24V converted from AC220V into the power supply DC24 of the BMS supplies power to the entire BMS, and the conventional high-voltage box has two switches, a switch button of the strong electric power supply part and a power switch button of the weak electric power supply part, namely the DC24V of the BMS.
With respect to the prior art, the following disadvantages often exist:
1. the switching power supply of the high-voltage box takes power from mains supply, so that the independence of an energy storage system is not facilitated, and for one energy storage system, a BMS (battery management system) of a controller of the high-voltage box needs to be converted into DC24V power supply from external mains supply power, so that the high-voltage box is a chicken rib;
2. the switch control button of high-voltage box divides two buttons of forceful electric power and weak current, and not only complex operation like this, because the opening and the closing of forceful electric power part come manual control through the forceful electric power button of high-voltage box front panel, like this when BMS weak current part needs the power of disconnection forceful electric power part, just it is not very convenient, cause the potential safety hazard easily.
Disclosure of Invention
The invention aims to provide a method for controlling the power-on and power-off of a switching power supply in an energy storage high-voltage box.
The invention realizes the purpose through the following technical scheme: a power-on and power-off control method for a switching power supply in an energy storage high-voltage box comprises the following steps:
step one, a 3845 power chip is used as a core circuit, and the core circuit 3845 is combined with a customized transformer to output DC24V to supply power for a BMS system;
secondly, replacing a strong current button switch and a weak current button switch on the existing high-voltage box with a universal change-over switch on the front panel of the high-voltage box, turning off the universal change-over switch, and starting a circuit through 3845 to operate the 3845 chip;
step three, after the universal change-over switch is automatically recovered to be closed, 3845 is enabled to continuously supply power through a 3845 stabilizing circuit, a 3845 core circuit continuously operates, and DC24V is continuously output;
step four, detecting the BMS, and when the energy storage abnormity is not detected, continuing to operate the BMS;
and step five, when the BMS detects the abnormal condition of energy storage and needs to turn off the switching power supply, outputting a 5V control signal through the BMS, and entering a 3845 turn-off circuit to enable the switching power supply not to carry out voltage conversion, thereby completing the non-manual power-off of strong current and weak current.
As a still further scheme of the invention: in the first step, the wide-range input of the 3845 core circuit is 10V to 1 KV.
As a still further scheme of the invention: in the first step, a power supply pin of the 3845 core circuit is divided into two paths, one path is used for supplying power to the 3845 starting circuit, and the other path is used for supplying power to the 3845 stabilizing circuit.
As a still further scheme of the invention: in the second step, the 3845 starting circuit specifically comprises
The high-voltage input is the total voltage of all PACKs of the whole battery cluster connected in series, the total voltage is divided by a plurality of resistors connected in series, a lower current is formed, when the universal change-over switch rotates to be switched on from off, the universal change-over switch is switched on from off pin 1 and off pin 2, normally open contacts are closed, a circuit is switched on, a 25V electrolytic capacitor is arranged at a power supply pin of 3845, and after the 25V electrolytic capacitor is fully filled with the current through the resistors connected in series, 3845 can be electrified to start working.
As a still further scheme of the invention: in the third step, the 3845 stabilizing circuit specifically comprises
The high-voltage input is the total voltage of all PACKs of the whole battery cluster connected in series, the wide-range direct current of the battery cluster is divided into two auxiliary edge outputs through a transformer, one path of transformer auxiliary edge 2 outputs 24V to supply power to a BMS system, the other path of transformer auxiliary edge 1 outputs 25V to be connected with a triode collector, the emitter of the triode collector supplies a power supply pin of 3845, the power supply pin and a 3845 starting circuit supply power together, and the base level of the triode collector is connected with a secondary edge 4 pin of an optocoupler.
As a still further scheme of the invention: in the fifth step, 3845 a shutdown circuit specifically comprises
When the power of forceful electric power and weak current is closed to needs, the BMS system sends the 5V signal, can lead to the primary side of opto-coupler to switch on, 6 foot ground connection of opto-coupler, 4 foot connect the base level of triode, the vice limit of opto-coupler switches on the back, 4 feet also can become ground connection, draw down the ground connection back when the base level of triode, lead to the 25V of coming from the triode collecting electrode, the transmission can not arrive the transmitting stage, thereby lead to 3845 outage, thereby the power strip is no longer worked, the BMS system also loses no work, the security of high-voltage box system and BMS system has been ensured.
The invention has the beneficial effects that:
1. the independence of power supply of the switching power supply of the energy storage high-voltage box is improved;
2. a universal change-over switch is used, a 3845 starting circuit, a 3845 stabilizing circuit and a 3845 closing circuit are combined, and convenience and safety of power on and power off of the high-voltage box are achieved.
Drawings
FIG. 1 is a schematic overall flow diagram of the present invention;
FIG. 2 is a schematic diagram of a 3845 start-up circuit according to the present invention;
FIG. 3 is a schematic diagram of a 3845 stabilization circuit according to the present invention;
FIG. 4 is a schematic diagram of a 3845 shutdown circuit according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1, a method for controlling power supply of a switching power supply in an energy storage high voltage box includes the following steps:
step one, a 3845 power chip is used as a core circuit, and the core circuit 3845 is combined with a customized transformer to output DC24V to supply power for a BMS system;
secondly, replacing a strong current button switch and a weak current button switch on the existing high-voltage box with a universal change-over switch on the front panel of the high-voltage box, turning off the universal change-over switch, and starting a circuit through 3845 to operate the 3845 chip;
step three, after the universal change-over switch is automatically recovered to be closed, 3845 is enabled to continuously supply power through a 3845 stabilizing circuit, a 3845 core circuit continuously operates, and DC24V is continuously output;
step four, detecting the BMS, and when the energy storage abnormity is not detected, continuing to operate the BMS;
and step five, when the BMS detects the abnormal condition of energy storage and needs to turn off the switching power supply, outputting a 5V control signal through the BMS, and entering a 3845 turn-off circuit to enable the switching power supply not to carry out voltage conversion, thereby completing the non-manual power-off of strong current and weak current.
In the embodiment of the invention, in the first step, the wide-range input of the 3845 core circuit is 10V to 1 KV.
In the embodiment of the invention, in the first step, the power supply pin of the 3845 core circuit is divided into two paths, one path is used for supplying power to the 3845 starting circuit, and the other path is used for supplying power to the 3845 stabilizing circuit.
Example two
Referring to fig. 1 to 4, a method for controlling power supply of a switching power supply in an energy storage high voltage box includes the following steps:
step one, a 3845 power chip is used as a core circuit, and the core circuit 3845 is combined with a customized transformer to output DC24V to supply power for a BMS system;
secondly, replacing a strong current button switch and a weak current button switch on the existing high-voltage box with a universal change-over switch on the front panel of the high-voltage box, turning off the universal change-over switch, and starting a circuit through 3845 to operate the 3845 chip;
step three, after the universal change-over switch is automatically recovered to be closed, 3845 is enabled to continuously supply power through a 3845 stabilizing circuit, a 3845 core circuit continuously operates, and DC24V is continuously output;
step four, detecting the BMS, and when the energy storage abnormity is not detected, continuing to operate the BMS;
and step five, when the BMS detects the abnormal condition of energy storage and needs to turn off the switching power supply, outputting a 5V control signal through the BMS, and entering a 3845 turn-off circuit to enable the switching power supply not to carry out voltage conversion, thereby completing the non-manual power-off of strong current and weak current.
In the second step of the present invention, the 3845 start-up circuit specifically includes
The high-voltage input is the total voltage of all PACKs of the whole battery cluster connected in series, the total voltage is divided by a plurality of resistors connected in series, a lower current is formed, when the universal change-over switch rotates to be switched on from off, the universal change-over switch is switched on from off pin 1 and off pin 2, normally open contacts are closed, a circuit is switched on, a 25V electrolytic capacitor is arranged at a power supply pin of 3845, and after the 25V electrolytic capacitor is fully filled with the current through the resistors connected in series, 3845 can be electrified to start working.
In the third step of the present invention, the 3845 stabilizing circuit specifically includes
The high-voltage input is the total voltage of all PACKs of the whole battery cluster connected in series, the wide-range direct current of the battery cluster is divided into two auxiliary edge outputs through a transformer, one path of transformer auxiliary edge 2 outputs 24V to supply power to a BMS system, the other path of transformer auxiliary edge 1 outputs 25V to be connected with a triode collector, the emitter of the triode collector supplies a power supply pin of 3845, the power supply pin and a 3845 starting circuit supply power together, and the base level of the triode collector is connected with a secondary edge 4 pin of an optocoupler.
In the fifth step of the present invention, the 3845 shutdown circuit specifically includes
When the power of forceful electric power and weak current is closed to needs, the BMS system sends the 5V signal, can lead to the primary side of opto-coupler to switch on, 6 foot ground connection of opto-coupler, 4 foot connect the base level of triode, the vice limit of opto-coupler switches on the back, 4 feet also can become ground connection, draw down the ground connection back when the base level of triode, lead to the 25V of coming from the triode collecting electrode, the transmission can not arrive the transmitting stage, thereby lead to 3845 outage, thereby the power strip is no longer worked, the BMS system also loses no work, the security of high-voltage box system and BMS system has been ensured.
The working principle is as follows: the switching power supply in the high-voltage box is changed from commercial power AC220V to 24DC, the power is directly taken from the whole battery cluster, a 3845 power chip is used as a core circuit, the wide range is from dozens of input V to about 1KV, the core circuit of 3845 is combined with a customized transformer to output DC24V for supplying power to a BMS system, and the independence of an energy storage system is powerfully guaranteed; the front panel of the high-voltage box adopts a universal change-over switch to replace the scheme of a strong current button switch and a weak current button switch on the existing high-voltage box, a 3845 chip is operated by rotating the universal change-over switch and starting a circuit through 3845, so that input dozens of V to about 1KV is output and supplied to a BMS system through a core circuit of 3845 in combination with a customized transformer output DC 24V; although the universal change-over switch can automatically return to the state of switching over the change-over switch after the hand leaves after being switched on, the 3845 stabilizing circuit enables the 3845 to continuously supply power, the 3845 core circuit to continuously run and continuously output DC 24V; the 3845 shutdown circuit has been increased in 3845 circuits, detects the energy storage abnormal conditions when the BMS, when needing to close switching power supply, through BMS output 5V's control signal, gets into 3845 shutdown circuit for switching power supply is not carrying out voltage conversion, thereby accomplishes the non-manual outage of strong electricity and weak current.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A method for controlling the power on and off of a switching power supply in an energy storage high-voltage box is characterized by comprising the following steps: the method comprises the following steps:
step one, a 3845 power chip is used as a core circuit, and the core circuit 3845 is combined with a customized transformer to output DC24V to supply power for a BMS system;
secondly, replacing a strong current button switch and a weak current button switch on the existing high-voltage box with a universal change-over switch on the front panel of the high-voltage box, turning off the universal change-over switch, and starting a circuit through 3845 to operate the 3845 chip;
step three, after the universal change-over switch is automatically recovered to be closed, 3845 is enabled to continuously supply power through a 3845 stabilizing circuit, a 3845 core circuit continuously operates, and DC24V is continuously output;
step four, detecting the BMS, and when the energy storage abnormity is not detected, continuing to operate the BMS;
and step five, when the BMS detects the abnormal condition of energy storage and needs to turn off the switching power supply, outputting a 5V control signal through the BMS, and entering a 3845 turn-off circuit to enable the switching power supply not to carry out voltage conversion, thereby completing the non-manual power-off of strong current and weak current.
2. The method for controlling the power on and off of the switching power supply in the energy storage high-voltage box according to claim 1, wherein the method comprises the following steps: in the first step, the wide-range input of the 3845 core circuit is 10V to 1 KV.
3. The method for controlling the power on and off of the switching power supply in the energy storage high-voltage box according to claim 1, wherein the method comprises the following steps: in the first step, a power supply pin of the 3845 core circuit is divided into two paths, one path is used for supplying power to the 3845 starting circuit, and the other path is used for supplying power to the 3845 stabilizing circuit.
4. The method for controlling the power on and off of the switching power supply in the energy storage high-voltage box according to claim 1, wherein the method comprises the following steps: in the second step, the 3845 starting circuit specifically comprises
The high-voltage input is the total voltage of all PACKs of the whole battery cluster connected in series, the total voltage is divided by a plurality of resistors connected in series, a lower current is formed, when the universal change-over switch rotates to be switched on from off, the universal change-over switch is switched on from off pin 1 and off pin 2, normally open contacts are closed, a circuit is switched on, a 25V electrolytic capacitor is arranged at a power supply pin of 3845, and after the 25V electrolytic capacitor is fully filled with the current through the resistors connected in series, 3845 can be electrified to start working.
5. The method for controlling the power on and off of the switching power supply in the energy storage high-voltage box according to claim 1, wherein the method comprises the following steps: in the third step, the 3845 stabilizing circuit specifically comprises
The high-voltage input is the total voltage of all PACKs of the whole battery cluster connected in series, the wide-range direct current of the battery cluster is divided into two auxiliary edge outputs through a transformer, one path of transformer auxiliary edge 2 outputs 24V to supply power to a BMS system, the other path of transformer auxiliary edge 1 outputs 25V to be connected with a triode collector, the emitter of the triode collector supplies a power supply pin of 3845, the power supply pin and a 3845 starting circuit supply power together, and the base level of the triode collector is connected with a secondary edge 4 pin of an optocoupler.
6. The method for controlling the power on and off of the switching power supply in the energy storage high-voltage box according to claim 1, wherein the method comprises the following steps: in the fifth step, 3845 a shutdown circuit specifically comprises
When the power of forceful electric power and weak current is closed to needs, the BMS system sends the 5V signal, can lead to the primary side of opto-coupler to switch on, the 6 foot ground connection of opto-coupler, 4 foot connect the base level of triode, the vice limit of opto-coupler switches on the back, 4 feet also can become ground connection, draw down the ground connection back when the base level of triode, lead to the 25V of coming from the triode collecting electrode, the transmission can not reach the transmitting stage, thereby lead to 3845 outage, thereby the power strip is no longer worked, the BMS system also loses the work of electric no longer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111147326.3A CN113746313B (en) | 2021-09-29 | 2021-09-29 | Method for controlling power-on and power-off of switching power supply in energy storage high-voltage box |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111147326.3A CN113746313B (en) | 2021-09-29 | 2021-09-29 | Method for controlling power-on and power-off of switching power supply in energy storage high-voltage box |
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| CN113746313A true CN113746313A (en) | 2021-12-03 |
| CN113746313B CN113746313B (en) | 2023-03-24 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130214739A1 (en) * | 2012-02-20 | 2013-08-22 | Jia-Yuan Lee | Charge type battery management system and method thereof |
| CN103904776A (en) * | 2014-03-27 | 2014-07-02 | 国网浙江省电力公司舟山供电公司 | Intelligent power distribution room power system |
| CN206698005U (en) * | 2017-04-25 | 2017-12-01 | 深圳市中旭源科技有限公司 | Dual input double startup exports voltage regulation type uninterrupted switch power supply |
| CN110556911A (en) * | 2019-08-02 | 2019-12-10 | 西北铁道电子股份有限公司 | General UPS constant voltage power supply of monitoring railcar battery life |
-
2021
- 2021-09-29 CN CN202111147326.3A patent/CN113746313B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130214739A1 (en) * | 2012-02-20 | 2013-08-22 | Jia-Yuan Lee | Charge type battery management system and method thereof |
| CN103904776A (en) * | 2014-03-27 | 2014-07-02 | 国网浙江省电力公司舟山供电公司 | Intelligent power distribution room power system |
| CN206698005U (en) * | 2017-04-25 | 2017-12-01 | 深圳市中旭源科技有限公司 | Dual input double startup exports voltage regulation type uninterrupted switch power supply |
| CN110556911A (en) * | 2019-08-02 | 2019-12-10 | 西北铁道电子股份有限公司 | General UPS constant voltage power supply of monitoring railcar battery life |
Non-Patent Citations (1)
| Title |
|---|
| 钟新元: "BMS系统的应用与改进", 《江西电力》 * |
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