CN117559770B - Trigger driving circuit and trigger driving method for liquid flow energy storage new energy battery charging circuit - Google Patents
Trigger driving circuit and trigger driving method for liquid flow energy storage new energy battery charging circuit Download PDFInfo
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- CN117559770B CN117559770B CN202410039254.8A CN202410039254A CN117559770B CN 117559770 B CN117559770 B CN 117559770B CN 202410039254 A CN202410039254 A CN 202410039254A CN 117559770 B CN117559770 B CN 117559770B
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- 238000000034 method Methods 0.000 title claims abstract description 53
- 238000004146 energy storage Methods 0.000 title claims abstract description 38
- 239000007788 liquid Substances 0.000 title claims abstract description 36
- 239000003990 capacitor Substances 0.000 claims abstract description 126
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 63
- 239000010703 silicon Substances 0.000 claims abstract description 63
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 61
- 230000008569 process Effects 0.000 claims description 30
- 230000001960 triggered effect Effects 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000006872 improvement Effects 0.000 description 6
- 239000004065 semiconductor Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
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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
- H02M1/06—Circuits specially adapted for rendering non-conductive gas discharge tubes or equivalent semiconductor devices, e.g. thyratrons, thyristors
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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
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
- H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
-
- 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
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in 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
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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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
- H02J2207/20—Charging or discharging characterised by the power electronics converter
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a trigger driving circuit and a trigger driving method for a liquid flow energy storage new energy battery charging circuit, wherein the trigger driving circuit comprises a trigger circuit and a driving circuit; the driving circuit comprises a driving branch connected in parallel between the bus and the battery cluster, and a main resistor and a main capacitor are sequentially connected in series on the driving branch; a main control branch is electrically connected between the connection point of the main resistor and the main capacitor and the control electrode of the controllable silicon, and a main control element controlled by a trigger circuit to be conducted is connected in series on the main control branch; an auxiliary control branch is electrically connected between the cathode of the controllable silicon and the cathode end of the main capacitor, and an auxiliary control element controlled by a trigger circuit to be conducted is connected in series on the auxiliary control branch. The circuit has the advantages of reasonable structure, convenient operation and control of the triggering driving method, quick triggering, no delay, reliable driving, strong stability, low voltage withstand requirement on components, low internal consumption, no need of additional power supply for auxiliary work, small volume and low cost.
Description
Technical Field
The invention relates to a trigger driving circuit and a trigger driving method for a liquid flow energy storage new energy battery charging circuit, and belongs to the field of new energy battery energy storage control.
Background
The thyristor is a short name of a thyristor rectifying element, and is a high-power semiconductor device with a four-layer structure of three PN junctions, which is also called a thyristor. The semiconductor device has the characteristics of small volume, relatively simple structure, strong function and the like, and is one of the more commonly used semiconductor devices. The silicon controlled rectifier is used for controllable rectification, inversion, frequency conversion, voltage regulation, non-contact switch and other purposes, and has wide application in the aspects of power equipment, automatic control, industrial electric and household appliances and the like, and in particular, the high-power silicon controlled rectifier has more obvious advantages in the aspects of electrolytic plating and electric energy storage.
The thyristors are used as contactless switches in the charging circuit of the liquid flow energy storage system, and currently, the trigger driving circuit of the thyristors used as contactless switches can be generally divided into 3 schemes: the device comprises a resistor trigger circuit, a resistor-capacitor trigger circuit and an isolated pulse trigger circuit.
Scheme one: and the resistor trigger circuit inputs trigger voltage to the thyristor control electrode through resistor division, so that the thyristor is triggered to be conducted. The disadvantage of scheme one: 1) After the SCR is conducted, the voltage of the control electrode of the SCR is similar to that of the cathode, the voltage dividing resistor bears the voltage of the battery pack, and the resistance value, insulation and power requirements of the resistor are greatly improved; 2) Because the voltage of the battery pack is not a fixed value, the negative voltage difference between the control electrode and the cathode can possibly cause the trigger failure of the SCR; 3) The voltage of the trigger circuit formed by the resistors is up to DC600V, the silicon controlled rectifier SCR is a current trigger semiconductor device, the power of the required resistor is high, and the loss of the opposite trigger circuit is relatively large; 4) After the silicon controlled rectifier is conducted, the current of the control electrode-cathode is larger, the power consumption of the silicon controlled rectifier SCR is increased, and the silicon controlled rectifier SCR can be damaged after long-time direct current passes through the silicon controlled rectifier SCR.
Scheme II: and the resistance-capacitance trigger circuit is used for inputting trigger voltage to the control electrode of the controllable silicon after boosting through a charging loop formed by the resistor and the capacitor, so that the controllable silicon is triggered to be conducted.
Scheme two has the disadvantage: 1) The voltage of the final capacitor is the voltage of a charging power supply, the highest DC is 600V, and the requirement on the withstand voltage value of the capacitor is high; 2) The RC charging loop consisting of a resistor and a capacitor has a trigger delay of about 50ms, which affects the charging response time.
Scheme III: a pulse trigger circuit triggers the turn-on of a thyristor by inputting a trigger voltage to the thyristor control electrode by generating a pulse using a single transistor (UJT) oscillator.
The disadvantage of scheme three: 1) A special auxiliary power supply is needed to provide a working power supply for the trigger circuit; 2) The pulse transformer needs a more complex pulse generation control loop, and is complex to control and has interference; 3) The pulse transformer has large volume, high cost and complex circuit when long pulse is triggered; 4) The power consumption is larger and the heating value is larger.
Disclosure of Invention
The invention aims to solve the technical problems of reasonable structure, quick triggering, no delay, reliable driving, strong stability, low voltage withstand requirement on components, low internal consumption, no need of additional power supply for auxiliary work, small volume and low cost.
For solving above-mentioned technical problem, this patent application liquid flow energy storage new forms of energy battery charging circuit is with triggering drive circuit, including battery cluster and the silicon controlled rectifier charging circuit who charges to the battery cluster, silicon controlled rectifier charging circuit is including the silicon controlled rectifier SCR of electricity connection between charging bus and battery cluster, characterized by: the trigger circuit is used for triggering the controllable silicon to work under the control of the trigger circuit; the driving circuit comprises a driving branch connected in parallel between a bus of the positive electrode and the negative electrode of the battery cluster, and the driving branch is sequentially connected with a main resistor R12 and a main capacitor C01 in series from the positive electrode to the negative electrode; a main control branch is electrically connected between a connection point M of the main resistor R12 and the main capacitor C01 and a control electrode G of the controllable silicon, and a main control element U1 controlled by a trigger circuit to be conducted is connected in series on the main control branch; an auxiliary control branch is electrically connected between the cathode K of the controllable silicon and the cathode end N of the main capacitor, and an auxiliary control element U2 controlled by a trigger circuit to be conducted is connected in series on the auxiliary control branch.
As an improvement, the main control branch is also connected with a main current limiting resistor R02 in series.
As a further improvement, an auxiliary capacitor C02 and an auxiliary current limiting resistor R13 are connected in series between the negative electrode terminal N of the main capacitor and the negative electrode of the battery cluster on the driving branch.
As an improvement, an auxiliary control capacitor C03 is connected in series with the auxiliary control branch, and discharge resistors R14 are connected in parallel with the two ends of the auxiliary control capacitor.
As a further improvement, the steering diode D02 is connected in series to the driving branch, and the positive electrode of the steering diode is electrically connected with the bus of the positive electrode.
As an improvement, a charging resistor R01 is connected in parallel between a control electrode G and a cathode K of the controlled silicon, a directional diode D01 is electrically connected between the control electrode G of the controlled silicon and the cathode of the directional diode, and the cathode of the directional diode is electrically connected with the cathode of the directional diode.
As an implementation manner, the main control element U1 and the auxiliary control element U2 are photoelectric couplers.
As an implementation manner, the trigger circuit includes an optocoupler branch connected with two input ends of the optocoupler in series, an optocoupler resistor R03 is connected in series on the optocoupler branch, two ends of the optocoupler branch are connected in parallel with a voltage-embedded resistor R05, a negative electrode of the optocoupler branch is electrically connected with a negative electrode GND of a weak current power supply, a positive electrode of the optocoupler branch is electrically connected with a switch S1, and the switch switches an object electrically connected with the positive electrode of the optocoupler branch between a positive electrode VCC of the weak current power supply and a control end SX of the liquid flow energy storage system BMS.
A trigger driving method of a trigger driving circuit for a liquid flow energy storage new energy battery charging circuit is characterized by comprising the following steps: the trigger circuit powered by the weak current power supply triggers the driving circuit powered by the strong current bus to work, and then the driving circuit drives the silicon controlled rectifier charging circuit to work; the triggering method of the trigger circuit comprises the steps that a trigger signal is input to a change-over switch S1, the change-over switch starts to supply power to an optocoupler branch, and two optocouplers start to work and output a conduction signal; the driving method of the driving circuit comprises a standby process, a triggering process and a resetting process, wherein the standby process comprises a bus for charging a main capacitor C01 and a secondary capacitor C02 through a driving branch, and meanwhile, a battery cluster charges the main capacitor C01 and the secondary capacitor C02 through a charging resistor R01, a directional diode D01, a main resistor R12 and a secondary current limiting resistor R13; the triggering process comprises the steps that the main control branch and the auxiliary control branch are connected at the moment of the conduction of the two photoelectric couplers, and a silicon controlled triggering driving loop which takes a main capacitor C01 as a power supply, the main control branch and the auxiliary control branch as a flowing line and drives a control electrode and a negative electrode of a silicon controlled rectifier SCR to be conducted is formed; after the SCR is triggered and conducted, the bus starts to charge the battery cluster through the SCR charging circuit; meanwhile, a secondary capacitor charging loop which takes the battery cluster as a power supply, the secondary capacitor C02 as a charged object and the secondary current limiting resistor R13 as a charging current limiting resistor is formed; then forming a silicon controlled follow current driving loop which takes the voltage difference between a main capacitor C01 and a secondary control capacitor C03 as a power supply, takes a main control branch and a secondary control branch as a flowing line and drives a control electrode and a negative electrode of a silicon controlled rectifier SCR to be continuously conducted so as to maintain that a bus continuously charges a battery cluster through a silicon controlled rectifier charging circuit; at the moment, a double-capacitor charging loop which takes a battery cluster as a power supply, takes a secondary capacitor C02 and a secondary control capacitor C03 as charged objects and takes a secondary current-limiting resistor R13 as a charging current-limiting resistor is formed; as the discharging process of the main capacitor is finished, the charging of the auxiliary capacitor C02 and the auxiliary control capacitor C03 is finished, so that the auxiliary control branch is cut off, the driving circuit is also disconnected, and the triggering process is finished; the resetting process comprises the steps that the battery cluster is charged completely, the trigger circuit is closed by the change-over switch, the two photoelectric couplers stop working, the auxiliary control capacitor C03 is discharged completely through the discharging resistor R14, the bus is used for charging the main capacitor C01 and the auxiliary capacitor C02 completely through the driving branch, and the trigger signal of the change-over switch S1 is waited.
As an improvement, the trigger signal of the switch S1 has two supply modes, one is switched to the positive pole VCC of the weak current power supply, belonging to the manual control mode, and the other is switched to the control end SX of the liquid flow energy storage system BMS, and the liquid flow energy storage system BMS sends the trigger signal, belonging to the automatic control mode.
In summary, the trigger driving circuit for the liquid flow energy storage new energy battery charging circuit adopting the structure has the advantages of reasonable structure, convenient operation and control of the trigger driving method, quick triggering, no delay, reliable driving, strong stability, low voltage-resistant requirement on components, low internal consumption, no need of additional power supply for auxiliary work, small volume and low cost.
Drawings
The patent application is further described in detail with reference to the accompanying drawings:
FIG. 1 is a schematic circuit diagram of the present patent application;
FIG. 2 is a schematic circuit diagram of a trigger circuit;
FIG. 3 is a schematic diagram of a driving circuit;
FIG. 4 is an equivalent schematic diagram of the driving circuit in use at the moment of triggering;
FIG. 5 is an equivalent circuit schematic diagram of the use state of the driving circuit after triggering;
fig. 6 is an equivalent circuit schematic diagram of the usage state of the driving circuit after the battery cluster is charged.
Description of the embodiments
As shown in fig. 1-6, the triggering driving circuit for the liquid flow energy storage new energy battery charging circuit comprises a battery cluster 1 and a silicon controlled rectifier charging circuit 2 for charging the battery cluster, wherein the silicon controlled rectifier charging circuit comprises a silicon controlled rectifier SCR electrically connected between a charging bus and the battery cluster. In the drawings, the charging bus bars are denoted by +P and-P. The present patent application also includes a trigger circuit 3 and a drive circuit 4 that triggers the operation of the thyristors under the control of the trigger circuit. The drive circuit comprises a drive branch 5 connected in parallel between a bus of the positive electrode and the negative electrode of the battery cluster. The driving branch is sequentially connected with a main resistor R12 and a main capacitor C01 in series from the positive electrode to the negative electrode. A main control branch 6 is electrically connected between a connection point M of the main resistor and the main capacitor and a control electrode G of the controllable silicon. The main control branch is connected with a main control element U1 controlled by a trigger circuit to be conducted in series. An auxiliary control branch 7 is electrically connected between the cathode K of the controllable silicon and the cathode end N of the main capacitor, and an auxiliary control element U2 controlled by a trigger circuit to be conducted is connected in series on the auxiliary control branch. The utility model discloses a mainly realize triggering fast through weak accuse strong drive structure, no delay, trigger reliably, stability is strong, and is low to the withstand voltage requirement of components and parts, and the internal consumption is little, need not extra power auxiliary operation, small, with low costs. The weak control and strong drive structure mainly comprises a weak current control circuit and a strong current drive circuit, wherein the weak current control circuit is a trigger circuit, and the strong current drive circuit is a drive circuit. Specifically, the driving circuit is mainly composed of three parts, namely: the device comprises a driving branch, a main control branch and an auxiliary control branch. The driving branch is a circuit connected in parallel between a bus of the positive electrode and the negative electrode of the battery cluster, and is directly powered by the bus. The bus voltage is applied to the main resistor and the main capacitor. For convenience of description, an electrical connection point of the main resistor and the main capacitor is referred to as a connection point. In this patent application, the master control branch is arranged between the connection point and the control electrode of the thyristor, and therefore, the master control branch is the only control branch of the control electrode of the thyristor. The auxiliary control branch is electrically connected between the cathode of the main capacitor and the cathode of the controllable silicon and is responsible for conducting a circuit between the cathode of the main capacitor and the cathode of the controllable silicon. Therefore, the main capacitor realizes a power supply loop for the control electrode and the cathode of the silicon controlled rectifier through the main control branch and the auxiliary control branch, and the loop is called a silicon controlled rectifier trigger driving loop for convenience of description. Obviously, when the thyristor triggers the drive circuit to be conducted, drive current is provided for the control electrode and the cathode of the thyristor, so that the thyristor is driven to be conducted, and the drive of the thyristor charging circuit is realized. In the application, a main control element is connected in series on the main control branch, the whole main control branch is conducted when the main control element is conducted, and after the main control element is conducted, the positive electrode of the main capacitor is directly and electrically connected with the control electrode of the silicon controlled rectifier. Similarly, the auxiliary control branch is also connected in series with an auxiliary control element, and the auxiliary control element controls the electric connection between the cathode of the main capacitor and the cathode of the silicon controlled rectifier by controlling the conduction of the auxiliary control branch. In the application, the main control element and the auxiliary control element are controlled by the trigger circuit, and the main control element and the auxiliary control element are conducted when the trigger circuit works. Thus, when the trigger circuit works, the main control element and the auxiliary control element work, the main control branch circuit and the auxiliary control branch circuit are connected, the silicon controlled rectifier triggers the driving circuit to electrify and work, the silicon controlled rectifier is triggered to work, and the bus starts to charge the battery cluster. After the thyristor is triggered, the charging operation is not stopped even if the trigger circuit stops working. When the battery cluster is charged, the charging current is smaller than the holding current of the silicon controlled rectifier, and the silicon controlled rectifier charging circuit is automatically closed. The utility model discloses a weak current control strong current is adopted in this patent application, and the reaction is rapid, triggers in time, and strong current part is by the generating line power supply, and weak current part is by the power supply of liquid flow energy storage system, need not extra power auxiliary work, and the internal consumption is little, does not have bulky device, and small in size, the cost is also not high, helps popularizing and applying.
In this embodiment, the main control branch is further connected in series with a main current limiting resistor R02. The main current limiting resistor is connected in series with the main control branch, and is mainly used for limiting the current of the main control branch, protecting the working safety of the main control element and being beneficial to prolonging the service life of the whole machine.
In this embodiment, a secondary capacitor C02 and a secondary current limiting resistor R13 are connected in series between the negative terminal of the primary capacitor and the negative terminal of the battery cluster on the driving branch. After the auxiliary capacitor is connected in series on the driving branch, the whole driving branch is connected with two capacitors in series, so that the voltage division effect can be achieved, the voltage resistance of the main capacitor and the auxiliary capacitor is improved, the voltage resistance requirement on the main capacitor and the auxiliary capacitor is relatively reduced, and the cost is reduced and the service life is prolonged. In addition, after the auxiliary capacitor is added, an auxiliary capacitor charging loop is formed, namely: and a battery cluster is used as a power supply, and a charging loop of the auxiliary control branch and the auxiliary current limiting resistor is adopted.
In this embodiment, the auxiliary control branch is connected in series with an auxiliary control capacitor C03, and two ends of the auxiliary control capacitor are connected in parallel with a discharge resistor R14. After the auxiliary control branch is connected with the auxiliary control capacitor in series, the main capacitor, the auxiliary capacitor and the auxiliary control capacitor form star connection, and the auxiliary capacitor charging loop comprises two capacitors: a secondary capacitance and a secondary control capacitance. Therefore, the voltage division function can be achieved, the voltage resistance of the auxiliary control capacitor and the auxiliary capacitor is improved, the voltage resistance requirement on the auxiliary control capacitor and the auxiliary capacitor is relatively reduced, and the cost is reduced and the service life is prolonged.
In this embodiment, the steering diode D02 and the steering resistor R11 are connected in series to the driving branch, and the positive electrode of the steering diode is electrically connected to the bus of the positive electrode. After the steering diode is connected in series on the movable branch, the voltage of the control electrode and the cathode of the silicon controlled rectifier can be prevented from entering the input end of the silicon controlled rectifier charging circuit by utilizing the unidirectional conductivity of the diode, namely, entering the bus is prevented, and the working reliability and stability are ensured.
In this embodiment, a charging resistor R01 is connected in parallel between the control electrode of the thyristor and the cathode, a direction diode D01 is electrically connected between the control electrode of the thyristor and the cathode of the direction diode, and the cathode of the direction diode is electrically connected with the cathode of the direction diode. The directional diode and the charging resistor are arranged to form a charging loop for the main capacitor and the auxiliary capacitor, namely: the battery cluster charges the main capacitor and the auxiliary capacitor through the charging resistor, the directional diode and the main resistor. Thus, the main capacitor and the auxiliary capacitor are provided with the second charging loop, and the reliability of charging is ensured.
In this embodiment, the main control element and the auxiliary control element are photocouplers. The input end of the photoelectric coupler is correspondingly and electrically connected with the trigger circuit, and the output end of the photoelectric coupler is correspondingly and electrically connected with the drive circuit, so that the trigger circuit can trigger or control the drive circuit. The photoelectric coupler is adopted as the main control element and the auxiliary control element, so that not only can the control of weak current to strong current be realized, but also the photoelectric isolation can be realized, the mutual influence of a trigger circuit and a driving circuit is avoided, and the working reliability is ensured.
In this embodiment, the trigger circuit includes an optocoupler branch 8 connected in series with two optocoupler inputs. An optocoupler resistor R03 is connected in series on the optocoupler branch, and embedded resistors R05 are connected in parallel at two ends of the optocoupler branch. The negative pole of the optocoupler branch is electrically connected with the negative pole GND of the weak current power supply, and the positive pole of the optocoupler branch is electrically connected with a change-over switch S1. The change-over switch switches the object electrically connected with the positive pole of the optocoupler branch between the weak current power supply positive pole VCC and the control end SX of the liquid flow energy storage system BMS. In this patent application, the trigger circuit is mainly composed of five parts, namely: the control end of the diverter switch, the optocoupler branch, the embedded resistor, the weak current power supply and the liquid flow energy storage system. The optocoupler branch circuit is connected with two homodromous optocouplers (input ends) and an optocoupler resistor in series, and the optocoupler resistor is used for limiting the current of the optocoupler branch circuit. The negative pole of the optocoupler branch is electrically connected with the negative pole of the weak current power supply, and the positive pole of the optocoupler branch is electrically connected with the switch. And the change-over switch can be switched between the positive electrode of the weak current power supply and the control end of the liquid flow energy storage system. When the change-over switch is switched to the positive pole of the weak current power supply, the light coupling branch is powered on in a manual control mode, and the two photoelectric couplers start to work, namely the driving circuit is triggered to work. When the change-over switch is switched to the control end of the liquid flow energy storage system, the automatic control mode is controlled by the liquid flow energy storage system, namely whether the two photoelectric couplers work or not is determined by the liquid flow energy storage system. In this patent application, the opto-coupler branch road both ends parallelly connected have the embedding and pressing resistance, and when change over switch unsettled state, the positive pole of opto-coupler branch road can be by embedding and pressing resistance ground connection, opto-coupler branch road is inoperative this moment, and trigger circuit can not trigger drive circuit work, belongs to standby state or shut down state.
In this embodiment, the triggering driving method of the triggering driving circuit for the liquid flow energy storage new energy battery charging circuit is a method that the triggering circuit triggers driving power first and then drives the thyristor charging circuit to work through the driving circuit. The driving circuit comprises a triggering method of a triggering circuit and a driving method of a driving circuit. The trigger circuit is powered by a weak current power supply, and the driving circuit and the silicon controlled rectifier charging circuit are powered by a strong current bus. The triggering method of the trigger circuit comprises the steps that a trigger signal is input to the change-over switch, namely, the trigger power supply or the starting power supply is firstly input, the change-over switch starts to supply power to the optocoupler branch, and the two optocouplers start to work and output a conducting signal to the driving circuit. The two photoelectric couplers are the only connecting ties of the trigger circuit and the driving circuit, and the trigger circuit and the driving circuit transmit trigger signals through the photoelectric couplers and are physically isolated in a photoelectric mode, so that the working reliability is ensured. The driving method of the driving circuit includes three steps or processes, namely: standby procedure, trigger procedure and reset procedure. The standby process is a charging process of the main capacitor and the auxiliary capacitor, specifically, the standby process comprises the step of charging the main capacitor and the auxiliary capacitor through a bus through a driving branch, and meanwhile, the battery cluster charges the main capacitor and the auxiliary capacitor through a charging resistor, a directional diode, the main resistor and an auxiliary current limiting resistor. And after the main capacitor and the auxiliary capacitor are charged, the main capacitor and the auxiliary capacitor are used as power sources in the subsequent process. Because the main capacitor and the auxiliary capacitor have the function of isolating direct current, no current exists in the circuit in the standby process, and no power internal consumption exists. In this patent application, the triggering process is that the main control branch and the auxiliary control branch are turned on at the moment when the two photocouplers are turned on. Because the auxiliary control capacitor is not charged and is equivalent to short circuit, a thyristor trigger driving loop which takes the main capacitor as a power supply, the main control branch and the auxiliary control branch as a flowing line and drives the control electrode and the negative electrode of the thyristor to be conducted is formed. The thyristor trigger driving circuit is also a charging circuit of the auxiliary control capacitor, the auxiliary control capacitor is gradually charged, and the main capacitor is gradually discharged. After the control electrode and the negative electrode of the silicon controlled rectifier are conducted, the silicon controlled rectifier is triggered to be conducted, and the bus starts to charge the battery cluster through the silicon controlled rectifier charging circuit. Meanwhile, a secondary capacitor charging loop is formed by taking the battery cluster as a power supply, the secondary capacitor as a charged object and the secondary current limiting resistor as a charging current limiting resistor. Along with the charging of the auxiliary control capacitor, a silicon controlled follow current driving loop is formed, wherein the voltage difference between the main capacitor and the auxiliary control capacitor is used as a power supply, the main control branch circuit and the auxiliary control branch circuit are used as a flowing circuit, and the control electrode and the negative electrode of the driving silicon controlled rectifier are continuously conducted. The main function of the thyristor flywheel driving circuit is to provide a maintaining current for the thyristors so as to maintain the bus to charge the battery clusters continuously through the thyristor charging circuit. In the present application, there is also a dual-capacitor charging loop in which a battery cluster is used as a power source, a secondary capacitor, a secondary control capacitor is used as a charged object, and a secondary current limiting resistor is used as a charging current limiting resistor. When the discharging process of the main capacitor is finished, the charging of the auxiliary capacitor and the auxiliary control capacitor is finished, the blocking direct current effect of the capacitor appears, the auxiliary control branch is cut off, the driving circuit is also disconnected, and the triggering process is finished. In this patent application, reset process is when the battery cluster finishes charging, and change over switch closes trigger circuit, and two photoelectric coupler stop work, and vice accuse electric capacity finishes through discharging the resistance discharge, and the generating line finishes charging main electric capacity and vice electric capacity through driving branch road, and three electric capacity resumes the original state. The reset process is therefore equivalent to the reset process of three capacitors, and is also the reset process of the driving circuit and the triggering circuit. And when the change-over switch receives the trigger signal again, repeating the process.
In this embodiment, the trigger signal of the change-over switch has two supply modes, one is switched to the positive electrode of the weak current power supply and belongs to the manual control mode, and the other is switched to the control end of the liquid flow energy storage system, and the liquid flow energy storage system sends the trigger signal and belongs to the automatic control mode.
When the change-over switch is switched to the positive pole of the weak current power supply, the manual control mode is equivalent to the local control mode, the change-over switch is powered nearby, and the trigger circuit is started. When the change-over switch is switched to the control end of the liquid flow energy storage system, the automatic control mode is equivalent to a remote control mode, and the liquid flow energy storage system is used for uniformly controlling triggering and driving. This patent application has two kinds of mode optional, controls more conveniently.
In this embodiment, the liquid flow energy storage system BMS, the silicon controlled rectifier SCR, the photoelectric coupler and the discharge diode D are all commonly used systems and elements for power electronics, and the structure and the working principle thereof belong to known technologies and are not described herein.
Claims (8)
1. The utility model provides a liquid flow energy storage new forms of energy battery charging circuit is with triggering drive circuit, includes battery cluster (1) and to battery cluster charging's silicon controlled rectifier charging circuit (2), and silicon controlled rectifier charging circuit includes the silicon controlled rectifier SCR that the electricity is connected between charging bus and battery cluster, characterized by: the trigger circuit (3) and the driving circuit (4) which triggers the controllable silicon to work under the control of the trigger circuit are also included;
the driving circuit comprises a driving branch (5) connected in parallel between a bus of the positive electrode and the negative electrode of the battery cluster, and the driving branch is sequentially connected with a main resistor R12 and a main capacitor C01 in series from the positive electrode to the negative electrode; a main control branch (6) is electrically connected between a connection point M of the main resistor R12 and the main capacitor C01 and a control electrode G of the controllable silicon, and a main control element U1 which is controlled to be conducted by a trigger circuit (3) is connected in series on the main control branch; an auxiliary control branch (7) is electrically connected between the cathode K of the controllable silicon and the cathode end N of the main capacitor, and an auxiliary control element U2 which is controlled to be conducted by a trigger circuit (3) is connected in series on the auxiliary control branch; the main control element U1 and the auxiliary control element U2 are photoelectric couplers; the trigger circuit comprises an optocoupler branch (8) connected with the input ends of two optocouplers in series, an optocoupler resistor R03 is connected in series on the optocoupler branch, the two ends of the optocoupler branch are connected with an embedded resistor R05 in parallel, the negative electrode of the optocoupler branch is electrically connected with the negative electrode GND of the weak current power supply, the positive electrode of the optocoupler branch is electrically connected with a change-over switch S1, and the change-over switch is used for switching an object electrically connected with the positive electrode of the optocoupler branch between the positive electrode VCC of the weak current power supply and the control end SX of the liquid flow energy storage system BMS.
2. The trigger drive circuit for a liquid flow energy storage new energy battery charging circuit of claim 1, wherein: and the main control branch is also connected with a main current limiting resistor R02 in series.
3. The trigger driving circuit for a liquid flow energy storage new energy battery charging circuit according to claim 1 or 2, characterized in that: and an auxiliary capacitor C02 and an auxiliary current limiting resistor R13 are connected in series between the negative electrode end N of the main capacitor and the negative electrode of the battery cluster on the driving branch.
4. The trigger drive circuit for a liquid flow energy storage new energy battery charging circuit as claimed in claim 3, wherein: an auxiliary control capacitor C03 is connected in series on the auxiliary control branch, and discharge resistors R14 are connected in parallel at two ends of the auxiliary control capacitor.
5. The trigger drive circuit for a liquid flow energy storage new energy battery charging circuit of claim 4, wherein: and the driving branch is connected with a direction control diode D02 in series, and the positive electrode of the direction control diode is electrically connected with a bus of the positive electrode.
6. The trigger drive circuit for a liquid flow energy storage new energy battery charging circuit of claim 5, wherein: a charging resistor R01 is connected in parallel between the control electrode G and the cathode K of the controlled silicon, a directional diode D01 is electrically connected between the control electrode G of the controlled silicon and the cathode of the directional diode, and the cathode of the directional diode is electrically connected with the cathode of the directional diode.
7. A trigger driving method of the trigger driving circuit for a liquid flow energy storage new energy battery charging circuit as claimed in claim 6, characterized in that: the trigger circuit powered by the weak current power supply triggers the driving circuit powered by the strong current bus to work, and then the driving circuit drives the silicon controlled rectifier charging circuit to work; the triggering method of the trigger circuit comprises the steps that a trigger signal is input to a change-over switch S1, the change-over switch starts to supply power to an optocoupler branch, and two optocouplers start to work and output a conduction signal; the driving method of the driving circuit comprises a standby process, a triggering process and a resetting process, wherein the standby process comprises a bus for charging a main capacitor C01 and a secondary capacitor C02 through a driving branch circuit (5), and meanwhile, a battery cluster charges the main capacitor C01 and the secondary capacitor C02 through a charging resistor R01, a directional diode D01, a main resistor R12 and a secondary current limiting resistor R13; the triggering process comprises the steps that the main control branch circuit (6) and the auxiliary control branch circuit (7) are connected at the moment of conducting the two photoelectric couplers, and a silicon controlled triggering driving loop which takes a main capacitor C01 as a power supply and takes the main control branch circuit (6) and the auxiliary control branch circuit (7) as a control electrode and a negative electrode which flow through a circuit and drive a silicon controlled rectifier SCR is formed; after the SCR is triggered and conducted, the bus starts to charge the battery cluster through the SCR charging circuit; meanwhile, a secondary capacitor charging loop which takes the battery cluster as a power supply, the secondary capacitor C02 as a charged object and the secondary current limiting resistor R13 as a charging current limiting resistor is formed; then forming a silicon controlled follow current driving loop which takes the voltage difference between a main capacitor C01 and a secondary control capacitor C03 as a power supply, a main control branch (6) and a secondary control branch (7) as a flowing line and drives a control electrode and a negative electrode of a silicon controlled rectifier SCR to be continuously conducted so as to maintain a bus to continuously charge a battery cluster through a silicon controlled rectifier charging circuit; at the moment, a double-capacitor charging loop which takes a battery cluster as a power supply, takes a secondary capacitor C02 and a secondary control capacitor C03 as charged objects and takes a secondary current-limiting resistor R13 as a charging current-limiting resistor is formed; as the discharging process of the main capacitor is finished, the charging of the auxiliary capacitor C02 and the auxiliary control capacitor C03 is finished, the auxiliary control branch (7) is cut off, the driving circuit (4) is also cut off, and the triggering process is finished; the resetting process comprises the steps that after the battery cluster is charged, a trigger circuit (3) is closed by a change-over switch, the two photoelectric couplers stop working, the auxiliary control capacitor C03 is discharged through a discharging resistor R14, a bus is used for charging the main capacitor C01 and the auxiliary capacitor C02 through a driving branch circuit (5), and a trigger signal of the change-over switch S1 is waited.
8. The trigger driving method of the trigger driving circuit for the liquid flow energy storage new energy battery charging circuit as claimed in claim 7, wherein the trigger driving method comprises the following steps: the trigger signal of the change-over switch S1 has two supply modes, one is switched to the positive pole VCC of the weak current power supply, belonging to the manual control mode, and the other is switched to the control end SX of the liquid flow energy storage system BMS, and the liquid flow energy storage system BMS sends the trigger signal, belonging to the automatic control mode.
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| CN2747777Y (en) * | 2004-11-26 | 2005-12-21 | 上海希瑞电子设备有限公司 | Fast and stable and two-way controllable silicon trigering circuit |
| JP2018032611A (en) * | 2016-08-26 | 2018-03-01 | 嶋田 隆一 | Ac current switchgear |
| CN217824716U (en) * | 2022-07-04 | 2022-11-15 | 沈阳利为智能科技中心 | Low-side driving type safety control thyristor |
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| GB1468513A (en) * | 1973-06-25 | 1977-03-30 | Sw Ltd | Battery chargers |
| WO2005017852A2 (en) * | 2003-08-01 | 2005-02-24 | Bae Systems | Isolated control apparatus incorporating light controlled power semiconductors |
| CN204361890U (en) * | 2014-12-17 | 2015-05-27 | 杭州四达电炉成套设备有限公司 | Intermediate frequency power supply thyristor Fiber isolation drive circuit |
| WO2017143586A2 (en) * | 2016-02-26 | 2017-08-31 | 广州市金矢电子有限公司 | Thyristor trigger apparatus |
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| CN117559770A (en) | 2024-02-13 |
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