CN209844596U - Voltage reducing device of charger - Google Patents
Voltage reducing device of charger Download PDFInfo
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- CN209844596U CN209844596U CN201920804296.0U CN201920804296U CN209844596U CN 209844596 U CN209844596 U CN 209844596U CN 201920804296 U CN201920804296 U CN 201920804296U CN 209844596 U CN209844596 U CN 209844596U
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Abstract
The utility model provides a fill motor step-down gear is applied to the long-range nuclear of storage battery and holds the discharge, fills the motor connection to the direct current generating line for the direct current load power supply, fills motor step-down gear and includes step-down module, controllable switch group and control module, wherein: the voltage reduction module is connected in series between the positive output end of the charger and a positive bus of the direct current bus; the controllable switch group is connected in parallel at two ends of the voltage reduction module, and the control end of the controllable switch group is connected to the control module; the control module controls the controllable switch group to be disconnected when receiving a discharging command from the upper computer, so that the voltage output to the positive bus by the charger is pulled down to be less than or equal to a first preset voltage through the voltage reduction module, and the control module controls the controllable switch group to be closed when receiving a discharging finishing command from the upper computer, so that the voltage reduction module is bypassed.
Description
Technical Field
The embodiment of the utility model provides a relate to electric power and communication field, more specifically say, relate to a machine step-down gear charges.
Background
According to the general technical conditions and safety requirements of direct-current power supply equipment in the power engineering of GB/T19826 and the technical rules for running and maintaining a direct-current power supply device of a storage battery for a DL/T724-2000 power system, the valve-controlled storage battery needs to carry out check discharge in a certain period, the prior technical conditions are that the capacity discharge is carried out by utilizing a resistance type dummy load completely depending on manual work on site, for a double-electric double-charging direct-current system, before the discharge, an operator in the first step firstly switches a manual bus-bar switch between two sections of buses from an open circuit state to a closed state, a second group of spare storage battery buses are connected to a first section of direct-current buses of a first group of storage batteries to play a role in standby power supply, then a charger of the first group of storage batteries to be discharged is separated from the first section of buses, and a battery pack to be discharged is separated from, further, a resistive load was manually installed, and a nuclear capacity discharge with a current rate of 10 hours was performed. Entirely manual, and operated off-line. High labor cost, time and labor waste, energy consumption and environmental pollution.
The online nuclear capacity discharge of remote control requires that the charger, and the battery, and direct current bus do not break away from each other, guarantees that extreme condition bus does not lose voltage.
For a charger capable of read-write control, the storage battery can only discharge current when the voltage input to a bus by the charger is controlled to be lower than the bus voltage of the on-line storage battery, and meanwhile, the charger is ensured not to output current to interfere with the discharge current of a discharged storage battery.
However, the charger that cannot perform the writing operation cannot remotely control the output voltage, which hinders the further implementation of online discharge, and if the problem cannot be solved, online nuclear capacity discharge cannot be achieved.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a to the above-mentioned machine that charges that can not write in operation can't realize the remote control to output voltage for the online battery of remote control nuclear capacity discharges the unable problem of implementing safely, provides a machine that charges step-down gear.
The embodiment of the utility model provides a solve above-mentioned technical problem's technical scheme is, provide a quick-witted step-down device charges, be applied to the long-range nuclear capacity of storage battery and discharge, the machine that charges is connected to the direct current generating line for the direct current load power supply, machine step-down device charges includes step-down module, controllable switch group and control module, wherein: the voltage reduction module is connected between the positive output end of the charger and the positive bus of the direct current bus in series; the controllable switch group is connected in parallel at two ends of the voltage reduction module, and the control end of the controllable switch group is connected to the control module; the control module controls the controllable switch group to be disconnected when receiving a discharging command from an upper computer, so that the voltage output by the charger to the positive bus is pulled down to be less than or equal to a first preset voltage through the voltage reduction module, and controls the controllable switch group to be closed when receiving a discharging finishing command from the upper computer, so that the voltage reduction module is bypassed.
Preferably, the charger voltage reduction device comprises a communication module; the control module comprises a detection submodule for detecting the state of the controllable switch group; the communication module is connected to the control module and sends the state of the controllable switch group acquired by the detection submodule to the upper computer.
Preferably, the charger voltage reduction device comprises a power supply module, and the control module comprises two power supply ports; the controllable switch group comprises a coil and a main contact, the main contact is connected in parallel with two ends of the voltage reduction module, two power supply ports of the control module, the coil and the output end of the power supply module are connected in series to form a coil control loop, the control module enables the coil control loop to be closed or disconnected by controlling the on-off of the two power supply ports, and the on-off or the off-off of the controllable switch group is realized.
Preferably, the control module comprises two detection ports, the controllable switch group comprises an auxiliary contact, and the auxiliary contact is synchronously switched on or off with the main contact; the auxiliary contact is connected between the two detection ports of the control module in series; the control module confirms that the controllable switch group is closed when detecting that the voltages of the two detection ports are smaller than a second preset voltage, and confirms that the controllable switch group is opened when detecting that the voltages of the two detection ports are larger than or equal to the second preset voltage.
Preferably, the step-down module is formed by connecting a plurality of step-down diodes in series, and the controllable switch group comprises a direct current contactor or a direct current breaker.
Preferably, the voltage reducing device comprises a manual switch connected to two ends of the voltage reducing module in parallel, and the manual switch is in a normally open state.
Preferably, the first preset voltage is a full-charge voltage of the storage battery pack, and the second preset voltage is 5V.
The utility model discloses quick-witted step-down device charges through the disconnection of the controllable switch group of control to make the step-down module will charge the machine and export the voltage drop-down of positive generating line to being less than online storage battery busbar voltage, realize the remote control to charging machine output voltage, and then realize the online nuclear of remote control storage battery and hold and discharge, ensure that direct current generating line does not lose voltage, guarantee power supply safety.
Drawings
Fig. 1 is a circuit diagram of a charger voltage reduction device applied to a storage battery pack remote nuclear power receiving system according to an embodiment of the present invention;
fig. 2 is a circuit diagram of a charger voltage reduction device provided by the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, it is the circuit diagram of the charging machine voltage reducing device provided by the embodiment of the present invention applied to the storage battery remote nuclear capacity discharge system, and this charging machine voltage reducing device 21 can be applied to the storage battery remote nuclear capacity discharge. The charger 22 is connected to a direct current bus supplying power to a direct current load, and the voltage input to the positive bus by the charger 22 is lower than the bus voltage of the on-line storage battery pack by controlling the disconnection of the controllable switch group, so that the remote control of the output voltage of the charger is realized, and the on-line nuclear capacity discharge of the storage battery pack is further realized by the remote control.
As shown in fig. 2, it is a circuit diagram of a charger voltage reducing device provided by the embodiment of the present invention. The charger voltage-reducing device 21 of this embodiment includes a voltage-reducing module 11, a controllable switch group 12 and a control module 13, wherein: the voltage reduction module 11 is connected in series between the positive output end of the charger and the positive bus of the direct current bus; the controllable switch group 12 is connected in parallel at two ends of the voltage reduction module 11, a control end of the controllable switch group 12 is connected to the control module 13, the control module 13 controls the controllable switch group 12 to be disconnected when receiving a discharge command from an upper computer, so that the voltage output to the positive bus by the charger is pulled down to be less than or equal to a first preset voltage through the voltage reduction module 11, and the control module 13 controls the controllable switch group 12 to be closed when receiving a discharge finishing command from the upper computer, so that the voltage reduction module 11 is bypassed. Preferably, the first preset voltage is a battery pack full-power voltage.
In one embodiment, the charger voltage reduction device includes a communication module, and the control module 13 includes a detection submodule for detecting a state of the controllable switch group 12; the communication module is connected to the control module and sends the state of the controllable switch group 12 acquired by the detection submodule to the upper computer. Specifically, the communication module has communication modes such as a serial port, a Local Area Network (LAN), and wireless.
In an embodiment of the present invention, the charger voltage reduction device includes a power supply module 14, and the control module 13 includes two power supply ports (NC1, COM 1); the controllable switch group 12 comprises a coil and a main contact, the main contact is connected in parallel at two ends of the voltage reduction module 11, two power supply ports (NC1 and COM1) of the control module 13, the coil and the output end of the power supply module 14 are connected in series to form a coil control loop, and the control module 13 controls the on-off of the two power supply ports (NC1 and COM1) to close or open the coil control loop and realize the on-off of the controllable switch group 12. The power supply module 14 is a 24V DC/DC power supply and the coil drives the voltage DC 24V.
In one embodiment of the present invention, the control module 13 includes two detection ports (DI1, DI2), the controllable switch group 12 includes an auxiliary contact, and the auxiliary contact and the main contact are synchronously turned on or off; the auxiliary contacts are connected in series between the two detection ports (DI1, DI2) of the control module 13; the control module 13 confirms that the controllable switch group 12 is closed when detecting that the voltages of the two detection ports (DI1, DI2) are less than the second preset voltage, and the control module 13 confirms that the controllable switch group 12 is opened when detecting that the voltages of the two detection ports (DI1, DI2) are greater than or equal to the second preset voltage. Preferably, the second preset voltage is 5V.
In an embodiment of the present invention, the voltage-reducing module is formed by connecting 20 voltage-reducing diodes in series, and the maximum voltage of the voltage-reducing module is 1000V and the current of the voltage-reducing module is 50A.
In particular, the above-mentioned controllable switch group 12 comprises a direct current contactor or a direct current breaker. When the controllable switch group 12 is the DC contactor, the main contact is in a closed state, at this time, the internal relay of the control module 13 is closed, the DC contactor coil is energized, the main contact is closed, the auxiliary contact is also closed, the level of the detection port (DI1, DI2) becomes DC0V, and the state is DI 0. When the controllable switch group 12 is a direct current breaker, the main contact is in a normally closed state; at this time, the internal relay of the control module is normally open, the DC contactor coil is not energized, the auxiliary contacts are also normally closed, the level of the detection port (DI1, DI2) becomes DC0V, and the state is DI 0.
In an embodiment of the present invention, the voltage reducing device includes a manual switch 15 connected in parallel to both ends of the voltage reducing module 11, and the manual switch 15 is in a normally open state. If bus voltage loss fault occurs in the discharging process, after discharging is stopped, an operator needs to check the bus voltage loss fault on the station, and manually closes a manual switch of the voltage regulating device to ensure that the voltage reducing module 11 is off-line and is not burnt out by current impact. After the fault is eliminated, the voltage reduction device recovers the initial state under the condition that the charger does not output current after the storage battery is fully charged.
The utility model discloses quick-witted step-down device and quick-witted step-down control method charges through the disconnection of control controllable switch group to make the step-down module with the voltage drop-down that the machine exported the positive generating line to be less than online storage battery busbar voltage, realize the remote control to machine output voltage that charges, and then realize the online nuclear capacity of remote control storage battery and discharge, ensure that direct current generating line does not lose voltage, guarantee power supply safety.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. The utility model provides a quick-witted step-down gear charges, is applied to the long-range nuclear capacity of storage battery and discharges, the machine that charges is connected to the direct current generating line for the power supply of direct current load, its characterized in that, quick-witted step-down gear charges includes step-down module, controllable switch group and control module, wherein: the voltage reduction module is connected between the positive output end of the charger and the positive bus of the direct current bus in series; the controllable switch group is connected in parallel at two ends of the voltage reduction module, and the control end of the controllable switch group is connected to the control module; the control module controls the controllable switch group to be disconnected when receiving a discharging command from an upper computer, so that the voltage output by the charger to the positive bus is pulled down to be less than or equal to a first preset voltage through the voltage reduction module, and controls the controllable switch group to be closed when receiving a discharging finishing command from the upper computer, so that the voltage reduction module is bypassed.
2. The charger voltage-reducing device according to claim 1, characterized in that it comprises a communication module; the control module comprises a detection submodule for detecting the state of the controllable switch group; the communication module is connected to the control module and sends the state of the controllable switch group acquired by the detection submodule to the upper computer.
3. The charger voltage-reducing device according to claim 1, characterized in that it comprises a power supply module, said control module comprising two power supply ports; the controllable switch group comprises a coil and a main contact, the main contact is connected in parallel with two ends of the voltage reduction module, two power supply ports of the control module, the coil and the output end of the power supply module are connected in series to form a coil control loop, the control module enables the coil control loop to be closed or disconnected by controlling the on-off of the two power supply ports, and the on-off or the off-off of the controllable switch group is realized.
4. The charger voltage reduction device according to claim 3, wherein the control module comprises two detection ports, the controllable switch group comprises an auxiliary contact, and the auxiliary contact is synchronously turned on or off with the main contact; the auxiliary contact is connected between the two detection ports of the control module in series; the control module confirms that the controllable switch group is closed when detecting that the voltages of the two detection ports are smaller than a second preset voltage, and confirms that the controllable switch group is opened when detecting that the voltages of the two detection ports are larger than or equal to the second preset voltage.
5. The charger step-down device according to claim 1, characterized in that the step-down module is formed by a plurality of step-down diodes connected in series, and the controllable switch group comprises a dc contactor or a dc circuit breaker.
6. The charger voltage reducing device according to claim 1, wherein the voltage reducing device comprises a manual switch connected in parallel to two ends of the voltage reducing module, and the manual switch is in a normally open state.
7. The charger voltage reducing device according to claim 4, wherein the first preset voltage is a battery pack full-electricity voltage, and the second preset voltage is 5V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920804296.0U CN209844596U (en) | 2019-05-30 | 2019-05-30 | Voltage reducing device of charger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920804296.0U CN209844596U (en) | 2019-05-30 | 2019-05-30 | Voltage reducing device of charger |
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| CN209844596U true CN209844596U (en) | 2019-12-24 |
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| CN201920804296.0U Active CN209844596U (en) | 2019-05-30 | 2019-05-30 | Voltage reducing device of charger |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212603A (en) * | 2019-05-30 | 2019-09-06 | 深圳市普禄科智能检测设备有限公司 | Charger dropping equipment and charger are depressured control method |
| CN114069073A (en) * | 2021-12-15 | 2022-02-18 | 北京泰岳天成科技有限公司 | Storage battery core capacitor discharge control system and method |
-
2019
- 2019-05-30 CN CN201920804296.0U patent/CN209844596U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212603A (en) * | 2019-05-30 | 2019-09-06 | 深圳市普禄科智能检测设备有限公司 | Charger dropping equipment and charger are depressured control method |
| CN114069073A (en) * | 2021-12-15 | 2022-02-18 | 北京泰岳天成科技有限公司 | Storage battery core capacitor discharge control system and method |
| CN114069073B (en) * | 2021-12-15 | 2023-12-29 | 北京泰岳天成科技有限公司 | Storage battery nuclear capacity discharge control system and method |
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