CN218161838U - High-voltage energy storage control circuit and energy storage high-voltage box - Google Patents
High-voltage energy storage control circuit and energy storage high-voltage box Download PDFInfo
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- CN218161838U CN218161838U CN202221280303.XU CN202221280303U CN218161838U CN 218161838 U CN218161838 U CN 218161838U CN 202221280303 U CN202221280303 U CN 202221280303U CN 218161838 U CN218161838 U CN 218161838U
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Abstract
The utility model discloses a high-pressure energy storage control circuit and energy storage high-pressure tank, its circuit includes the group battery, a isolator unit for controlling this high-pressure energy storage control circuit and the break-make of power supply generating line, a pre-charge switch unit for charging with first charging current value according to pre-charge instruction control group battery, a charging switch unit for switching the charging current value of group battery into the second charging current value, an emergency switch unit for making the group battery supply power to the load when power supply commonly used loses electricity, a the control unit for exporting the state of pre-charge instruction and control group battery. The utility model discloses not only can provide stable emergency power source for the load, circuit structure is simple moreover, still conveniently overhauls and changes the part to realized shutting off completely the group battery when the group battery is full of electricity, effectively prevent that the group battery from playing positive effect because of floating to fill impairedly to extension group battery life-span.
Description
Technical Field
The utility model relates to a high-pressure tank technical field especially relates to a high-pressure energy storage control circuit and energy storage high-pressure tank.
Background
In a power plant, a lead-acid storage battery is mainly used as a storage battery of a backup power supply for a direct-current system, when the direct-current system needs a large output load or a charger cannot provide enough energy, the storage battery supplies energy to the load, and when an alternating-current power supply or the charger breaks down, the storage battery supplies energy to the load through the charger, so that a reliable power supply is provided for downstream equipment within required time, and the running safety of a unit of the power plant is guaranteed. However, lead-acid batteries have the disadvantages of relatively low energy density, short service life, heavy volume, need of float charge, and the like.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to at least one defect that prior art exists, a high pressure energy storage control circuit and energy storage high-pressure tank are provided.
The utility model provides a technical scheme that its technical problem adopted is: constructing a high voltage tank control circuit comprising:
a battery pack;
the isolating switch unit is used for controlling the on-off of the high-voltage energy storage control circuit and the power supply bus;
the pre-charging switch unit is connected with the isolating switch unit and the battery pack and is used for controlling the battery pack to be charged at a first charging current value according to a pre-charging instruction;
the charging switch unit is connected with the isolating switch unit and the battery pack and used for switching the charging current value of the battery pack to a second charging current value;
the emergency switch unit is connected with the isolating switch unit and the battery pack and used for enabling the battery pack to supply power to a load when a common power supply loses power;
and the control unit is connected with the pre-charging switch unit and the battery pack and used for outputting the pre-charging command and monitoring the state of the battery pack.
In the high voltage energy storage control circuit of the present invention, the battery pack is a lithium battery pack.
In the high-voltage energy storage control circuit of the present invention, the pre-charge switch unit includes a pre-charge resistor and a pre-charge relay;
the isolating switch unit is connected to the anode of the battery pack through the pre-charging resistor and a normally open contact circuit of a pre-charging relay, and an excitation coil of the pre-charging relay is connected with the control unit.
In the high-voltage energy storage control circuit of the present invention, the charging switch unit includes a charging contactor RL1; the isolating switch unit is connected to the positive electrode of the battery pack through a normally open contact circuit of the charging contactor RL 1.
In the high-voltage energy storage control circuit of the present invention, the emergency switch unit includes a diode D1 and a heat sink disposed on the diode D1; the cathode of the diode D1 is connected with the isolating switch unit, and the anode of the diode D1 is connected with the anode of the battery pack.
In the high-voltage energy storage control circuit of the present invention, the control unit includes a voltage conversion unit, a shunt, a main control unit and a voltage man-machine interaction unit;
the positive pole of the input power of voltage conversion unit is connected the positive pole of group battery, the input power negative pole of voltage conversion unit is connected the input and the isolator unit of shunt, the output positive terminal of voltage conversion unit is connected the feed end of main control unit, the output negative pole end of voltage conversion unit is connected the earthing terminal of main control unit, the output of shunt is connected the negative pole of group battery, the current sampling end of shunt is connected the sampling input of main control unit, the first communication end of main control unit is connected the human-computer interaction unit, the preliminary filling instruction output of main control unit is connected the excitation coil of preliminary filling relay.
The high-voltage energy storage control circuit of the utility model also comprises the voltage acquisition card unit; and the second communication end of the main control unit is connected with the communication end of the voltage acquisition card unit, and the sampling bus of the voltage acquisition card unit is connected with the battery pack.
The high-voltage energy storage control circuit of the utility model also comprises a protective tube FU1, an emergency stop switch K2, an operation indicator lamp L1 and an alarm indicator lamp L2;
the positive electrode of the battery pack is connected with the input end of the protective tube FU1, the output end of the protective tube FU1 is connected with the output end of a normally open contact circuit of the pre-charging relay, the output end of a normally open contact circuit of the charging contact RL1, the anode of the diode D1 and the input power supply positive electrode of the voltage conversion unit, the output end of the protective tube FU1 is connected to the input power supply positive electrode of the voltage conversion unit through the emergency stop switch K2, the operation indicator lamp L1 is connected with the operation indication control end of the main control unit, and the alarm indicator lamp L2 is connected with the alarm indication control end of the main control unit.
The utility model also provides an energy storage high-pressure box, which comprises a box body and a high-pressure energy storage control circuit provided by the embodiment of the utility model; the isolating switch unit, the pre-charging switch unit, the emergency switch unit and the control unit are arranged in the box body.
In the energy storage high-voltage box, still be equipped with in the box and be used for fixing isolator unit, pre-charge switch unit, the switch unit that charges and emergency switch unit's base frame, and set up isolator unit, pre-charge switch unit, the switch unit that charges and emergency switch unit and insulating part between the base frame.
The utility model discloses following beneficial effect has: the on-off of the high-voltage energy storage control circuit and the power supply bus is controlled through the isolating switch unit so as to carry out maintenance work conveniently; the pre-charging switch unit is used for controlling the battery pack to be charged at a first charging current value so as to prevent the battery pack from being damaged due to spark caused by too large instantaneous current; after the first charging current value is stabilized, the charging current value of the battery pack is switched to a second charging current value through the charging switch unit so as to improve the charging efficiency; when the power supply bus loses power, the emergency switch unit enables the battery pack to supply power to the load so as to avoid the power loss and the shutdown of downstream equipment, thereby effectively ensuring the normal operation of the load; and still monitor the state of group battery through the control unit, make the staff in time know the situation of group battery, when discovering unusually, can in time carry out the treatment. The utility model discloses not only can provide stable emergency power supply for the load, circuit structure is simple moreover, still concentrates each switch unit and the control unit and sets up, conveniently overhauls and changes the part to realized shutting off completely to the group battery when the group battery is full of electricity, effectively prevent that the group battery from filling impaired because of floating, play positive effect to extension group battery life-span.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a circuit diagram of a high-voltage energy storage control circuit provided by the present invention;
fig. 2 is a first structural diagram of the energy storage high-pressure tank provided by the present invention;
fig. 3 is a second structural diagram of the energy storage high-pressure tank provided by the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1, the utility model provides a high-voltage energy storage control circuit, including group battery 2, isolator unit 3, pre-charge switch unit 4, charging switch unit 5, emergency switch unit 6 and the control unit 7.
In some embodiments, the battery pack 2 may be a lithium battery pack composed of a plurality of lithium batteries.
The isolating switch unit 3 is used for controlling the on-off of the high-voltage energy storage control circuit and the power supply bus, referring to fig. 1, when the isolating switch unit 3 is switched off, the high-voltage energy storage control circuit can be disconnected from the charger, so that the high-voltage energy storage control circuit is electrically isolated, and the circuit can be maintained conveniently. The isolating switch unit 3 may be an isolating switch.
As shown in fig. 1, a pre-charge switch unit 4 is connected to the isolation switch unit 3 and the battery pack 2, and the pre-charge switch unit 4 is used for controlling the battery pack 2 to be charged at a first charging current value according to a pre-charge command.
In some embodiments, as shown in fig. 1, the pre-charge switch unit 4 includes a pre-charge resistor 41 and a pre-charge relay 42. The isolating switch unit 3 is connected to the positive electrode of the battery pack 2 through a precharge resistor 41 and a normally open contact circuit of a precharge relay 42, and the excitation coil of the precharge relay 42 is connected to the control unit 7. In addition, the first charging current value may be adjusted by adjusting the resistance value of the pre-charge resistor 41.
As shown in fig. 1, the charging switch unit 5 is connected to the isolation switch unit 3 and the battery pack 2, and the charging switch unit 5 is configured to switch the charging current value of the battery pack 2 to a second charging current value. Wherein the second charging current value is greater than the first charging current value.
In some embodiments, as shown in fig. 1, the charging switch unit 5 includes a charging contactor RL1; the isolating switch unit 3 is connected to the positive electrode of the battery pack 2 through a normally open contact circuit of the charging contactor RL1, and the opening and closing of the charging contactor RL1 can be controlled by shifting an operating lever of the charging contactor RL 1. In an embodiment, the excitation coil of the charging contactor RL1 may be connected to the control unit 7 (not shown) to receive a charging command, so as to control the opening and closing of the charging contactor RL 1.
As shown in fig. 1, an emergency switch unit 6 is connected to the isolation switch unit 3 and the battery pack 2, and the emergency switch unit 6 is used for enabling the battery pack 2 to supply power to a load when the common power supply is in power failure.
In some embodiments, as shown in fig. 1, the emergency switch unit 6 includes a diode D1. The cathode of the diode D1 is connected to the disconnecting switch unit 3, and the anode of the diode D1 is connected to the anode of the battery pack 2. In some embodiments, a heat sink (not shown) is further disposed on the diode D1 to avoid the diode D1 from being damaged due to long-time conduction heating.
As shown in fig. 1, a control unit 7 is connected to the precharge switching unit 4 and the battery pack 2, and the control unit 7 is configured to output a precharge command and monitor the state of the battery pack 2, including monitoring the voltage and current of the battery pack 2.
In some embodiments, as shown in fig. 1, the control unit 7 includes a voltage conversion unit 71, a current divider 72, a main control unit 73 and a voltage human-machine interaction unit 74. The positive electrode of an input power supply of the voltage conversion unit 71 is connected with the positive electrode of the battery pack 2, the negative electrode of the input power supply of the voltage conversion unit 71 is connected with the input end of the shunt 72 and the isolating switch unit 3, the positive output end of the voltage conversion unit 71 is connected with the power supply end of the main control unit 73, the negative output end of the voltage conversion unit 71 is connected with the ground end of the main control unit 73, the output end of the shunt 72 is connected with the negative electrode of the battery pack 2, the current sampling end of the shunt 72 is connected with the sampling input end of the main control unit 73, the first communication end of the main control unit 73 is connected with the human-computer interaction unit 74, and the pre-charging command output end of the main control unit 73 is connected with the magnet exciting coil of the pre-charging relay 42.
The voltage conversion unit 71 may be a DC-DC conversion module, configured to perform voltage conversion on the output voltage of the battery pack 2, and provide a suitable working voltage for the main control unit 73, where a DCin + pin of the voltage conversion unit corresponds to an input power positive electrode, a DCin-pin corresponds to an input power negative electrode, a 24V + pin corresponds to an output positive electrode terminal, and a 24V-pin corresponds to an output negative electrode terminal; the main control unit 73 is used for outputting a precharge instruction, is used in cooperation with the SHUNT 72, and acquires input current of the battery pack 2, and has a 485A pin and a 485B pin as first communication ends, a CAN0H pin and a CAN0L pin as second communication ends, a RL4+ pin and a RL 4-pin as precharge instruction output ends, a SHUNT + pin and a SHUNT-pin as sampling input ends, a RL5+ pin and a RL 5-pin as operation indication control ends, and a RL6+ pin and a RL 6-pin as alarm indication control ends; the human-machine interaction unit 74 is used for displaying the state of the battery pack, including displaying the voltage and output current of the battery pack 2.
In some embodiments, the current divider 72 may be a resistor, the current sampling terminal thereof corresponds to two ends of the resistor, and the input and output terminals thereof also correspond to two ends of the resistor.
In some embodiments, in order to fully monitor the state of each battery, as shown in fig. 1, the high voltage energy storage control circuit further includes a voltage acquisition card unit 8. The second communication end of the main control unit 73 is connected with the communication end of the voltage acquisition card unit 8, and the sampling bus of the voltage acquisition card unit 8 is connected with the battery pack 2. More specifically, the sampling bus of the voltage acquisition card unit 8 includes a plurality of voltage sampling ports, and the voltage sampling ports are respectively connected with each battery in a one-to-one correspondence manner, so as to measure the voltage of each battery; the main control unit 73 communicates with the voltage acquisition card unit 8 via the CAN protocol. It will be appreciated that the voltage of each battery may be displayed by the human-machine interaction unit 74.
In some embodiments, as shown in fig. 1, the high voltage energy storage control circuit further comprises a fuse FU1, an emergency stop switch K2, an operation indicator lamp L1 and an alarm indicator lamp L2. Wherein, the scram switch K2 can be a self-locking switch. The input of protective tube FU1 is connected to group battery 2's positive pole, the output of the normally open contact circuit of preliminary charging relay 42 is connected to protective tube FU 1's output, the output of the normally open contact circuit of charging contact RL1, diode D1's positive pole and voltage conversion unit 71's input power supply are anodal, protective tube FU 1's output is connected to voltage conversion unit 71's input power supply through scram switch K2 is anodal, the operation indication control end of main control unit 73 is connected to operation indicator L1, alarm indication control end that alarm indication lamp L2 connects main control unit 73. The emergency stop switch K2 is used for controlling the on-off of the input power supply of the voltage conversion unit 71, and further controlling whether the main control unit 7 works or not; the control unit 7 can be characterized as being in an operating state by lighting the operation indicator lamp L1; the alarm indicator L2 may be illuminated to indicate that the control unit 7 has found an abnormal condition, thereby providing a warning effect.
Referring to fig. 1, the working principle of the high-voltage energy storage control circuit is as follows: under the non-maintenance condition, the disconnecting switch unit 3 is in a closing state: when the main control unit 73 detects that the battery pack 2 is fully charged, the pre-charging relay 42 and the charging contact RL1 are completely turned off, the diode D1 is in a cut-off state at the time, the power supply bus does not supply power to the battery pack 2, floating charging current cannot be generated, damage to the battery pack 2 is avoided, and the service life of the battery pack is effectively prolonged; when the power supply bus is in power failure, the cathode voltage of the diode D1 is reduced, the diode D1 is conducted, and the battery pack 2 supplies power to the power supply bus, so that the emergency state is achieved; when the main control unit 73 detects that the battery pack 2 is in a non-full-charge state, the main control unit 73 outputs a pre-charge command to excite the pre-charge relay 42, the normally open contact circuit of the pre-charge relay is attracted, the anode of the battery pack 2 is conducted with the power supply bus, and the battery pack 2 is charged by the first charging current value, so that the phenomenon that the battery pack and other electronic elements are damaged due to the fact that the spark is generated due to too large instantaneous current input into the battery pack 2 is avoided; after the first charging current value is stabilized, a worker can close the charging contactor RL1 manually, namely, two ends of the pre-charging switch unit 4 are short-circuited, so that the battery pack 2 is charged at a second charging current value, and the charging efficiency is improved; the main control unit 73 also obtains the voltage and current of the battery pack and the voltage of each battery through the shunt 72 and the voltage acquisition card unit 8, and controls the human-computer interaction unit 74 to display the parameters, so that the staff can know the condition of the battery pack in time.
Referring to fig. 2 and fig. 3, the present invention further provides an energy storage high-voltage box, which includes a box body 1 and a high-voltage energy storage control circuit provided in the embodiment of the present invention; the isolation switch unit 3, the pre-charging switch unit 4, the charging switch unit 5, the emergency switch unit 6 and the control unit 7 are arranged in the box body 1.
In some embodiments, as shown in fig. 2 and 3, a base 12 for fixing the disconnecting switch unit 3, the pre-charging switch unit 4, the charging switch unit 5 and the emergency switch unit 6, and an insulator 15 disposed between the disconnecting switch unit 3, the pre-charging switch unit 4, the charging switch unit 5 and the emergency switch unit 6 and the base 12 are further provided in the case 1. And then make each switch unit and the control unit concentrate the setting to the staff overhauls and changes the part.
In some embodiments, as shown in fig. 3, a housing 11, a housing pressing bar 13, and a bottom plate 14 for fixing the voltage conversion unit 71 are further disposed in the case 1.
It can be understood that the utility model discloses not only can provide stable emergency power supply for the load, circuit structure is simple moreover, also very convenient when overhauing or changing the part to realized shutting off completely the group battery when the group battery is full of electricity, effectively prevent that the group battery from filling impaired because of floating, play the positive action to extension group battery life-span.
It is to be understood that the foregoing examples merely represent preferred embodiments of the present invention, and that the description thereof is more specific and detailed, but not intended to limit the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (10)
1. A high-voltage tank control circuit, comprising:
a battery pack (2);
the isolating switch unit (3) is used for controlling the on-off of the high-voltage energy storage control circuit and the power supply bus;
the pre-charging switch unit (4) is connected with the isolating switch unit (3) and the battery pack (2) and is used for controlling the battery pack (2) to be charged at a first charging current value according to a pre-charging instruction;
a charging switch unit (5) connected to the disconnecting switch unit (3) and the battery pack (2) for switching a charging current value of the battery pack (2) to a second charging current value;
the emergency switch unit (6) is connected with the isolating switch unit (3) and the battery pack (2) and is used for enabling the battery pack (2) to supply power to a load when a common power supply is in power failure;
and the control unit (7) is connected with the pre-charging switch unit (4) and the battery pack (2) and is used for outputting the pre-charging command and monitoring the state of the battery pack (2).
2. The high-voltage energy storage control circuit according to claim 1, wherein the pre-charge switch unit (4) comprises a pre-charge resistor (41) and a pre-charge relay (42);
the isolating switch unit (3) is connected to the positive pole of the battery pack (2) through the normally open contact circuit of the pre-charging resistor (41) and the pre-charging relay (42), and the magnet exciting coil of the pre-charging relay (42) is connected with the control unit (7).
3. The high-voltage energy storage control circuit according to claim 2, characterized in that said charging switch unit (5) comprises a charging contactor RL1; the isolating switch unit (3) is connected to the positive electrode of the battery pack (2) through a normally open contact circuit of the charging contactor RL 1.
4. The high-voltage energy storage control circuit according to claim 3, characterized in that the emergency switch unit (6) comprises a diode D1, and a heat sink arranged on the diode D1; the cathode of the diode D1 is connected with the isolating switch unit (3), and the anode of the diode D1 is connected with the anode of the battery pack (2).
5. The high-voltage energy storage control circuit according to any one of claims 2 to 4, characterized in that the control unit (7) comprises a voltage conversion unit (71), a current divider (72), a main control unit (73) and a voltage man-machine interaction unit (74);
the positive connection of the input power supply of voltage conversion unit (71) the positive pole of group battery (2), the input power supply negative pole of voltage conversion unit (71) is connected the input and isolator unit (3) of shunt (72), the positive end of output of voltage conversion unit (71) is connected the feed end of main control unit (73), the output negative pole end of voltage conversion unit (71) is connected the ground terminal of main control unit (73), the output of shunt (72) is connected the negative pole of group battery (2), the current sampling end of shunt (72) is connected the sampling input of main control unit (73), the first communication end of main control unit (73) is connected human-computer interaction unit (74), the preliminary filling instruction output of main control unit (73) is connected the excitation coil of preliminary filling relay (42).
6. The high-voltage energy storage control circuit according to claim 5, further comprising a voltage acquisition card unit (8); the second communication end of the main control unit (73) is connected with the communication end of the voltage acquisition card unit (8), and the sampling bus of the voltage acquisition card unit (8) is connected with the battery pack (2).
7. The high-voltage energy storage control circuit according to claim 5, further comprising a fuse FU1, an emergency stop switch K2, an operation indicator lamp L1 and an alarm indicator lamp L2;
the positive electrode of the battery pack (2) is connected with the input end of the fuse tube FU1, the output end of the fuse tube FU1 is connected with the output end of a normally open contact circuit of the pre-charging relay (42), the output end of a normally open contact circuit of the charging contact RL1, the anode of the diode D1 and the input power supply positive electrode of the voltage conversion unit (71), the output end of the fuse tube FU1 is connected to the input power supply positive electrode of the voltage conversion unit (71) through the emergency stop switch K2, the operation indicator lamp L1 is connected with the operation indication control end of the main control unit (73), and the alarm indicator lamp L2 is connected with the alarm indication control end of the main control unit (73).
8. The high voltage energy storage control circuit according to claim 1, wherein the battery (2) is a lithium battery.
9. An energy storage high-voltage box, characterized by comprising a box body (1) and a high-voltage energy storage control circuit of any one of claims 1 to 8; the isolation switch unit (3), the pre-charging switch unit (4), the charging switch unit (5), the emergency switch unit (6) and the control unit (7) are arranged in the box body (1).
10. The energy storage high-voltage box according to claim 9, characterized in that a base (12) for fixing the isolating switch unit (3), the pre-charging switch unit (4), the charging switch unit (5) and the emergency switch unit (6) and an insulating member (15) arranged between the isolating switch unit (3), the pre-charging switch unit (4), the charging switch unit (5) and the emergency switch unit (6) and the base (12) are further arranged in the box body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221280303.XU CN218161838U (en) | 2022-05-26 | 2022-05-26 | High-voltage energy storage control circuit and energy storage high-voltage box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221280303.XU CN218161838U (en) | 2022-05-26 | 2022-05-26 | High-voltage energy storage control circuit and energy storage high-voltage box |
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| Publication Number | Publication Date |
|---|---|
| CN218161838U true CN218161838U (en) | 2022-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221280303.XU Active CN218161838U (en) | 2022-05-26 | 2022-05-26 | High-voltage energy storage control circuit and energy storage high-voltage box |
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| Country | Link |
|---|---|
| CN (1) | CN218161838U (en) |
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- 2022-05-26 CN CN202221280303.XU patent/CN218161838U/en active Active
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