CN218102942U - Electric energy output control circuit and energy storage equipment - Google Patents

Electric energy output control circuit and energy storage equipment Download PDF

Info

Publication number
CN218102942U
CN218102942U CN202221614670.9U CN202221614670U CN218102942U CN 218102942 U CN218102942 U CN 218102942U CN 202221614670 U CN202221614670 U CN 202221614670U CN 218102942 U CN218102942 U CN 218102942U
Authority
CN
China
Prior art keywords
control circuit
circuit
output
voltage conversion
switch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202221614670.9U
Other languages
Chinese (zh)
Inventor
赵密
童文平
刘文强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ecoflow Technology Ltd
Original Assignee
Ecoflow Technology Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ecoflow Technology Ltd filed Critical Ecoflow Technology Ltd
Priority to CN202221614670.9U priority Critical patent/CN218102942U/en
Application granted granted Critical
Publication of CN218102942U publication Critical patent/CN218102942U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Dc-Dc Converters (AREA)

Abstract

The application relates to an electric energy output control circuit and energy storage equipment, electric energy output control circuit includes: the current sampling unit is connected with the electric energy output end of the voltage conversion circuit and is used for collecting the output current of the voltage conversion circuit; the load simulation circuit is connected in parallel with the electric energy output end of the voltage conversion circuit and comprises a first switch module and a power consumption module; the control circuit is respectively connected with the current sampling unit and the first switch module and is used for controlling the first switch module to be conducted when receiving a first control signal so as to enable the power consumption module, the current sampling unit and the electric energy output end of the voltage conversion circuit to form a test loop; the control circuit is further used for obtaining the output current of the voltage conversion circuit through the current sampling unit, and outputting a turn-off signal for stopping outputting the electric energy to the voltage conversion circuit when the first switch module is in a conducting state and the output current is not within a preset range. The problem that an output control circuit is unreliable is solved.

Description

Electric energy output control circuit and energy storage equipment
Technical Field
The utility model relates to a battery management's technical field especially relates to an electric energy output control circuit, energy storage equipment.
Background
When the energy storage device or other power supply devices output electric energy, the output current of the conversion circuit may exceed the supply limit of the power supply on the branch circuit, and therefore an electric energy output control circuit needs to be arranged, the electric energy output control circuit can sample the output current by using the current sampling unit, and if the output current is greater than the supply limit of the power supply, the electric energy output of the conversion circuit is cut off, and the excessive current is prevented from being output to the branch load through the output port.
However, if the current sampling unit fails, the conversion circuit may output an excessive current, which may cause the output control circuit to be unreliable, and if the unreliable output control circuit is applied to the energy storage device, the energy storage device or the branch load may be damaged, which may result in a large potential safety hazard.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an electric energy output control circuit and energy storage equipment has solved the insecure problem of output control circuit that leads to when the current sampling unit trouble.
According to a first aspect of the present application, there is provided a power output control circuit comprising:
the current sampling unit is used for being connected with the electric energy output end of the voltage conversion circuit; the current sampling unit is used for collecting the output current of the voltage conversion circuit;
the load simulation circuit is connected in parallel with the electric energy output end of the voltage conversion circuit and comprises a first switch module and a power consumption module; the first switch module and the power dissipation module are connected in series;
the control circuit is respectively connected with the current sampling unit and the first switch module and is used for controlling the first switch module to be conducted when a first control signal is received so as to enable the power consumption module, the current sampling unit and the electric energy output end of the voltage conversion circuit to form a test loop; the control circuit is further configured to obtain an output current of the voltage conversion circuit through the current sampling unit, and output a turn-off signal to the voltage conversion circuit when the first switch module is in a conducting state and the output current is not within a preset range; the turn-off signal is used for controlling the voltage conversion circuit to stop outputting the electric energy.
In some embodiments of the present application, based on the above scheme, the power output control circuit further includes a driving circuit; the driving circuit is connected between the control circuit and the first switch module; the driving circuit is used for driving the first switch module to be switched on or switched off according to the control of the control circuit.
In some embodiments of the present application, based on the above scheme, the driving circuit includes:
a controlled end of the first switch tube is connected with an output end of the control circuit, a first end of the first switch tube is grounded, and a second end of the first switch tube is used as an output end of the driving circuit;
the first resistor is connected between the controlled end of the first switch tube and the first end of the first switch tube.
In some embodiments of the present application, based on the above scheme, the driving circuit includes:
a first end of the first switch tube is grounded, and a second end of the first switch tube is used as an output end of the driving circuit;
the first resistor is connected between the controlled end of the first switching tube and the first end of the first switching tube;
the first capacitor is connected between the controlled end of the first switch tube and the first end of the first switch tube;
and the second resistor is connected between the output end of the control circuit and the controlled end of the first switching tube.
In some embodiments of the present application, based on the above scheme, the control circuit is further configured to output a second control signal to the first switch module when the output current satisfies a preset range; the first switch module is turned off when receiving the second control signal.
In some embodiments of the present application, based on the above scheme, the power output control circuit further includes:
the alarm circuit is connected with the control circuit; the control circuit is further used for generating alarm information when the first switch module is in a conducting state and the output current is not in the preset range; the alarm circuit is used for giving an alarm in at least one of a sound form, an optical form and an electrical form when receiving the alarm information.
In some embodiments of the present application, based on the above scheme, the first switch module includes:
the relay comprises a coil and a switching part, wherein a first end of the coil is connected with a second end of the driving circuit, the second end of the coil is used for being connected with a first power supply, and the switching part is connected with the power consumption module in series; and the relay closes the switch part when the coil is electrified.
In some embodiments of the present application, based on the above scheme, the first switch module further includes:
and the anode of the diode is connected with the first end of the coil, the cathode of the diode is connected with the first power supply, and the diode forms a loop for releasing the electric energy of the coil when the relay is switched off.
In some embodiments of the present application, based on the above scheme, the power consumption module includes:
and the third resistor is connected with the switch part in series.
According to a second aspect of the present application, there is provided an energy storage device comprising a voltage conversion circuit and a power output control circuit as described above.
The electric energy output control circuit comprises a current sampling unit, a load simulation circuit and a control circuit, wherein the load simulation circuit comprises a first switch module and a power consumption module; the control circuit is respectively connected with the current sampling unit and the first switch module and used for controlling the first switch module in the load analog circuit to be conducted when a first control signal is received, so that the power consumption module, the current sampling unit and the electric energy output end of the voltage conversion circuit form a test loop; the output control circuit is applied to the energy storage device, so that the safety problem caused when the current sampling unit of the energy storage device breaks down can be avoided, and the discharging safety performance of the energy storage device is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It should be apparent that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived by those of ordinary skill in the art without inventive effort.
Fig. 1 is a schematic diagram illustrating a first power output control circuit according to an embodiment.
Fig. 2 is a schematic diagram illustrating a second power output control circuit according to an embodiment.
Fig. 3 is a schematic diagram illustrating a third power output control circuit according to an embodiment.
Fig. 4 is a schematic diagram illustrating a fourth power output control circuit according to an embodiment.
Fig. 5 is a schematic diagram illustrating a fifth power output control circuit according to an embodiment.
Fig. 6 is a schematic diagram illustrating a sixth power output control circuit according to an embodiment.
Fig. 7 is a schematic diagram illustrating a seventh power output control circuit according to an embodiment.
Fig. 8 is a schematic diagram illustrating an eighth power output control circuit according to an embodiment.
Fig. 9 is a schematic diagram illustrating a ninth power output control circuit according to an embodiment.
Fig. 10 is a schematic diagram illustrating an energy storage device according to an embodiment.
The reference numbers illustrate:
110: current sampling unit
120: load simulation circuit
130: control circuit
140: alarm circuit
121: first switch module
122: power consumption module
131: driving circuit
Q1: first switch tube
R1 to R5: first to fifth resistors
C1: first capacitor
L1: coil
S1: switch part
D1: diode with a high-voltage source
101: electric energy output control circuit
102: voltage conversion circuit
A1-A2: electric energy output end
B1-B2: power utilization port
P1: a first power supply
CT1: current detection element
Detailed Description
Exemplary embodiments that embody features and advantages of the present invention will be described in detail in the following description. It is to be understood that the invention is capable of other and different embodiments, and its several details are capable of modification in various other respects, all without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature, and not as restrictive.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present embodiment can be understood by those of ordinary skill in the art according to specific situations.
Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and a repetitive description thereof will be omitted.
The problem of unreliable output control circuit that current sampling unit breaks down and leads to in the electric energy output control circuit to and use unreliable output control circuit in energy storage equipment, can lead to energy storage equipment or branch road load to damage, have great potential safety hazard is solved in order to solve. The present application proposes the following.
The embodiment of the present application provides a power output control circuit, and fig. 1 is a schematic structural diagram of a first power output control circuit according to an embodiment, and as shown in fig. 1, the power output circuit at least includes a current sampling unit 110, a load simulation circuit 120, and a control circuit 130.
And the current sampling unit 110 is configured to be connected to the power output end of the voltage conversion circuit 102, and is configured to collect an output current of the voltage conversion circuit 102.
In a specific implementation, the current sampling unit 110 may employ a hall sensor, and the hall sensor is connected to any one of the power output terminals (A1, A2) of the voltage conversion circuit 102.
The load simulation circuit 120 is connected in parallel to the power output terminals (A1, A2) of the voltage conversion circuit 102, and the load simulation circuit 120 includes a first switch module 121 and a power consumption module 122, where the first switch module 121 and the power consumption module 122 are connected in series. The load simulation circuit 120 is used for simulating a load, when the first switch module 121 is turned on, the load simulation circuit 120 is equivalent to a load branch, and the voltage conversion circuit 102 supplies power to the power consumption module 122 on the load branch.
The control circuit 130 is connected to the current sampling unit 110 and the first switch module 121, and is further used for being connected to the voltage conversion circuit 102. The first switch module 121 is controlled to be turned on when receiving the first control signal, so that the power consumption module 122, the current sampling unit 110 and the power output terminals (A1, A2) of the voltage conversion circuit 102 form a test loop; the control circuit 130 is further configured to obtain an output current of the voltage conversion circuit 102 through the current sampling unit 110, and output a turn-off signal to the voltage conversion circuit 102 when the first switch module 121 is in an on state and the output current is not within a preset range; the shutdown signal is used to control the voltage converting circuit 102 to stop outputting power.
Wherein, the first control signal may be a power-on signal of the control circuit 130; or a fault detection signal received by the control circuit 130 from a user; or a preset periodic start signal, so as to implement periodic fault detection on the current sampling unit 110; or the load of the voltage conversion circuit 102 is connected, and when the load is connected, the current sampling unit 110 is subjected to fault detection.
When the first switch module 121 is in a conducting state and the output current obtained by the control circuit 130 is not within a preset range, it may be determined that the current sampling unit 11 has a fault; when the output current of the output current acquired by the control circuit 130 is within the preset range, the current sampling unit 11 can be determined to be working normally without failure. In a specific implementation, the preset range may be ± 5% of the standard output current value, which is a preset value, and when the output current acquired by the control circuit 130 is not within ± 5% of the standard output current value, it may be determined that the current sampling unit 110 has a fault.
In the embodiment of the present application, the power output terminals (A1, A2) of the voltage conversion circuit 102 may be connected to the power consumption ports (B1, B2), and the power output circuit of the present application may be disposed between the power output terminals (A1, A2) and the power consumption ports (B1, B2). The power consumption port can be a socket for connecting electric equipment when in use, the power consumption port can comprise a positive end and a negative end, and the current sampling unit 110 can be connected between the positive pole of the electric energy output end and the positive pole of the power consumption port, and also can be connected between the negative pole of the electric energy output end and the negative pole of the power consumption port. Corresponding to fig. 1, the current sampling unit 110 may be connected between the power output terminal A1 and the power consumption port B1, or may be connected between the power output terminal A2 and the power consumption port B2.
In the embodiment of the present application, the voltage conversion circuit 102 is a bidirectional conversion circuit. The voltage conversion circuit 102 may be connected to a battery pack, and when a load is connected through the power utilization ports (B1, B2), the voltage conversion circuit 102 may control the conversion of the electric power of the battery pack into the electric power required by the load.
The power utilization ports (B1, B2) of the present application may also be charging ports, and when the power utilization ports (B1, B2) are charging ports, the battery pack may be charged by connecting charging terminals, and the voltage conversion circuit 102 converts the electric energy of the charging terminals into the energy of the battery pack at this time. The charging terminal can be a commercial power charging terminal, a solar charging terminal and the like. When the battery pack is charged by connecting the charging terminal, the output control circuit of the present application may not be required for control.
In an embodiment of the application, the load may be connected through the power utilization ports (B1, B2). The power output circuit can control the power output ends (A1, A2) of the voltage conversion circuit 102 to output power to the loads connected to the power utilization ports (B1, B2).
In the embodiment of the present application, the control circuit 130 of the present application may control the first switch module 121 to continuously maintain the on state when receiving the first control signal, so that the fault condition of the current sampling unit 110 may be detected in real time. When the current sampling unit 110 fails, the voltage conversion circuit 102 is interrupted from outputting electric energy, thereby improving safety.
In the embodiment of the present application, since the power consumption module itself has power consumption, when the first switch module 121 is turned on, the electric energy output by the power utilization ports (B1, B2) may be reduced, and the corresponding load capacity may be affected. Therefore, power consumption is saved while avoiding the load capacity from being affected. The control circuit 130 of the present application may control the first switch module 121 to be turned off after determining the fault condition of the current sampling unit 110, that is, the control circuit 130 controls the first switch module 121 to be turned on and off once when receiving the first control signal. Alternatively, the control circuit 130 may also periodically control the first switch module 121 to turn on and off for multiple times when receiving the first control signal.
It should be noted that the control circuit 130 may control the first switch module 121 to be turned on and then turned off before the voltage conversion circuit 102 supplies power to the external load. The first control signal received by the control circuit 130 at this time may be a control signal other than the load-in signal of the voltage converting circuit 102.
In the following, the control circuit 130 controls the first switch module 121 to turn on and off once. When the power consumption port is not connected to the external load, the first switch module 121 is controlled to be turned on first, the power consumption module 122, the current sampling unit 110 and the voltage conversion circuit 102 form a test loop, the current sampling unit 110 collects current of the test loop, that is, current output current of the voltage conversion circuit 102, and then whether the current sampling unit 110 fails or not can be determined according to the collected output current. If the current sampling unit 110 fails, the control circuit 130 outputs a first control signal to disable the voltage conversion circuit 102 from supplying power to the load, and when the output control circuit is applied to the energy storage device, the output control circuit can provide dual safety control for the energy storage device where the voltage conversion circuit 102 is located, so that potential safety hazards caused by mistakenly outputting an excessive current under the condition that the current sampling unit 110 fails are avoided. In this embodiment, the control circuit 130 controls the first switch module 121 to turn off after the current sampling unit 110 finishes current collection, so as to prevent the power consumption module from continuously consuming the electric energy of the voltage conversion circuit 102, which causes resource waste. The control circuit 130 may output a second control signal to the first switch module, and the first switch module is turned off when receiving the second control signal.
The control circuit 130 may also control the first switching module 121 to be turned on and then turned off when the voltage conversion circuit 102 starts to supply power to the external load. For example, when the power consumption port is connected to the external load, the control circuit controls the first switch module 121 to be turned on when receiving the first control signal, and the current sampling unit 110 collects the current output current of the voltage conversion circuit 102, that is, the sum of the currents of the two parallel branches, i.e., the power consumption module 122 and the external load, so as to determine whether the current sampling unit 110 fails according to the collected output current. If the current sampling unit 110 fails, the power consumption module 122 may shunt the external load, so as to avoid a potential safety hazard caused by mistakenly outputting an excessive current when the current sampling unit 110 fails. The control circuit 130 may control the first switch module 121 to turn off after the fault of the current sampling unit 110 is repaired, so as to prevent the power consumption module 122 from continuously consuming the electric energy of the voltage conversion circuit 102, which may cause resource waste.
The current sampling unit 110 may serve as a first heavy safety barrier of the output control circuit, when the current sampling unit 110 normally works, the output control circuit may trigger the control circuit 130 according to the magnitude of the output current collected by the current sampling unit 110, and if the collected output current does not meet a preset requirement, the control circuit 130 may control the voltage conversion circuit 102 to stop outputting the electric energy. However, if the current sampling unit 110 itself has a fault, the current sampled by the current sampling unit 110 is inaccurate. At this time, the control circuit cannot be triggered or false triggering occurs, and the control circuit cannot be triggered or false triggering causes unreliability of the output control circuit. Applying an uncontrollable output control circuit to the energy storage device may result in outputting an excessive current, causing damage to the energy storage device or the branch load, and having a large potential safety hazard.
According to the scheme, a second safety barrier is added, when a first control signal is received, the first switch module in the load simulation circuit is controlled to be conducted, so that the power consumption module, the current sampling unit and the electric energy output end of the voltage conversion circuit 102 form a test loop, the control circuit is further used for obtaining the output current of the voltage conversion circuit 102 through the current sampling unit, when the first switch module is in a conducting state and the output current is not within a preset range, it is determined that the current sampling unit has a fault, the control circuit is used for outputting a turn-off signal to the voltage conversion circuit 102, and the voltage conversion circuit 102 is controlled to stop outputting the electric energy, so that the reliability of the output control circuit is improved, and when the safety barrier is applied to the energy storage device, the discharging safety performance of the energy storage device can be improved.
Fig. 2 is a schematic diagram illustrating a second power output control circuit according to an embodiment, and as shown in fig. 2, on the basis of fig. 1, the power output control circuit further includes a driving circuit 131.
The driving circuit 131 is connected between the control circuit 130 and the first switch module 121; the driving circuit is used for driving the first switch module 121 to be turned on or off according to the control of the control circuit 130.
Alternatively, the driving circuit 131 may employ a switching device such as a triode, a MOS transistor, a switching relay, or the like.
In a specific implementation, the control circuit 130 may multiplex a master control MCU (single chip microcomputer) in a control board of the energy storage device where the voltage conversion circuit 102 is located, and control the driving circuit 131 by using the master control MCU (single chip microcomputer). An independent MCU (single chip microcomputer) can also be used to control the driving circuit 131; wherein, the independent MCU is connected with the master control MCU.
By using the second power output control circuit, after the driving circuit 131 is added, the control circuit 130 can stably control the first switch module 121, thereby improving the stability of the circuit.
Fig. 3 is a schematic structural diagram of a third power output control circuit according to an embodiment, and as shown in fig. 3, on the basis of fig. 2, the driving circuit 131 includes a first switch Q1 and a first resistor R1.
A first end of the first switching tube Q1 is grounded, and a second end of the first switching tube Q1 is used as an output end of the driving circuit 131 and connected with the first switching module 121 in the load simulation circuit 120; the controlled end of the first switch tube Q1 is connected to the output end of the control circuit 130 and the first end of the first resistor R1, and the second end of the first resistor R1 is connected to the first end of the first switch tube Q1.
In a specific implementation, the first switch Q1 may be an NPN-type triode or an N-channel MOS transistor, and when the control circuit 130 outputs a high level signal, the first switch Q1 is turned on.
In this embodiment, the control circuit 130 is connected to the voltage conversion circuit 102 and the current sampling unit 110, the control circuit 130 obtains an output current through the current sampling unit 110, when the output current does not satisfy a preset range, the control circuit 130 outputs a first control signal for controlling the first switching tube Q1 to be turned on, and then the first switching tube Q1 controls the load analog circuit 120 to be turned on, so as to interrupt the electric energy output ends A1 and A2 of the voltage conversion circuit 102 from outputting electric energy to the electric energy utilization ports B1 and B2.
Fig. 4 is a schematic structural diagram of a fourth power output control circuit according to an embodiment, and as shown in fig. 4, in order to optimize the driving circuit 131, compared to fig. 3, the driving circuit 131 of this embodiment further includes a first capacitor C1 and a second resistor R2 on the basis of including a first switching tube Q1 and a first resistor R1.
A first end of the first switch tube Q1 is grounded, and a second end of the first switch tube Q1 is connected to the first switch module 121 in the load simulation circuit 120 as an output end of the driving circuit 131; the controlled end of the first switch tube Q1 is connected to the first end of the first resistor R1, the first end of the first capacitor C1, and the first end of the second resistor R2, the second end of the first resistor R1 and the first end of the first capacitor C1 are both connected to the first end of the first switch tube Q1, the second end of the second resistor R2 is connected to the control circuit 130, and the second end of the second resistor R2 is used as the output end of the driving circuit 131. In this embodiment, the first capacitor C1 is used for filtering, and the second resistor R2 is used for limiting current.
In this embodiment, a first switch tube Q1, a first resistor R1, a first capacitor C1 and a second resistor R2 are disposed between the control circuit 130 and the load analog circuit 120, the second resistor is configured to limit the current of the signal output by the control circuit 130, so as to prevent the output current of the control circuit 130 from being too large and damaging the first switch tube Q1, and the first resistor R1 and the first capacitor C1 are disposed to form an RC filter circuit, so as to reduce the transmission of interference signals, so that the first switch tube Q1 can accurately control the control signal output by the control circuit 130.
In order to prompt maintenance personnel, the control circuit 130 generates alarm information when the first switch module 121 is in the on state and the output current is not within the preset range. Fig. 5 is a schematic structural diagram of a fifth power output control circuit according to an embodiment, and as shown in fig. 5, on the basis of fig. 4, the power output control circuit is further provided with an alarm circuit 140, where the alarm circuit 140 is connected to the control circuit 130 in the control circuit 130 and is configured to alarm in at least one of sound, light and electricity when receiving alarm information.
The embodiment explicitly informs maintenance personnel to repair or replace the current sampling unit as soon as possible through an alarm circuit in at least one of sound, light and electricity.
Fig. 6 is a schematic diagram illustrating a sixth power output control circuit according to an embodiment, and as shown in fig. 6, on the basis of fig. 4, the first switch module 121 includes a relay.
The relay comprises a coil L1 and a switch part S1, wherein a first end of the coil L1 is connected with a second end of a first switch tube Q1 in the driving circuit 131, a second end of the coil L1 is connected with a first power supply P1, and the switch part S1 is connected with the power consumption unit 122 in series; when the coil L1 is energized, the relay closes the switch section S1.
The first power supply P1 may use an external power supply or may use a power supply provided by a voltage conversion circuit.
In order to form a test loop to test whether the current sampling unit 110 has a fault when the output current of the voltage conversion circuit 102 is not within the preset range, the control circuit 130 firstly controls the first switch tube Q1 to be conducted, the coil L1 is electrified, and the movable contact plate in the switch part S1 is deviated from the initial position thereof under the electromagnetic action, so that the switch part S1 is conducted. If the current sampling unit is normal, the control circuit 130 controls the first switching tube Q1 to turn off, then the coil L1 is powered off, and the movable contact plate in the switching part S1 returns to its initial position, so that the switching part S1 is turned off.
After receiving the first control signal, the control circuit 130 may control the coil L1 to be energized through the driving circuit 131, so as to turn on the switch portion S1. The control circuit may also send a second control signal to the driving circuit 131 to turn off the switching section S1.
It should be noted that the first switch module 121 may also adopt other types of switch devices, and the application is not limited thereto.
Fig. 7 is a schematic structural diagram of a seventh power output control circuit according to an embodiment, and as shown in fig. 7, on the basis of fig. 6, the first switch module 121 further includes a diode D1.
The anode of the diode D1 is connected to the second end of the first switch tube Q1 and the first end of the coil L1, the cathode of the diode D1 is connected to the first power source P1, and the diode D1 is turned on when the first switch tube Q1 is turned off to release the electric energy of the coil L1.
In this application, the control circuit 130 firstly controls the first switch Q1 to be turned on, and the control circuit 130 outputs the first control signal or the second control signal according to the output current collected by the current sampling unit 110. When the collected output current meets the preset range, the control circuit 130 outputs a second control signal, the first switching tube Q1 is turned off under the action of the second control signal, the electric energy of the coil L1 is released through the diode D1, the switching part S1 is turned off accordingly, the voltage conversion circuit 102 does not supply power to the power consumption module 122 any more, and resource waste is avoided.
Fig. 8 is a schematic structural diagram of an eighth power output control circuit according to an embodiment, and as shown in fig. 8, on the basis of fig. 7, the power consumption module 122 may be a third resistor R3, where the third resistor R3 is connected in series with the switch portion S1 of the first switch module 121.
It should be noted that the power dissipation module 122 is not limited to one resistor, and may also be a plurality of resistors connected in series or in parallel, which is not limited in this application.
Fig. 9 is a schematic structural diagram of a ninth power output control circuit according to an embodiment, and as shown in fig. 9, the current sampling unit 110 may be a current detection element CT1, a first end and a second end of the current detection element CT1 are both connected to the control circuit 130, and a third end and a fourth end of the current detection element CT1 are respectively connected to the power output end A1 and the power consumption port B1. The current detection element CT1 may be a current transformer, and in order to enable the control circuit 130 to obtain the output current of the voltage conversion circuit 102 through the current sampling unit 110 and prevent the output current from being too large, a fourth resistor R4 and a fifth resistor R5 are connected in parallel between the current detection element CT1 and the control circuit 130.
Based on the above-mentioned electric energy output control circuit, the present application further provides an energy storage device, fig. 10 is a schematic structural diagram of an energy storage device according to an embodiment, as shown in fig. 10, the energy storage device includes a voltage conversion circuit 102, an electric energy output control circuit 101, and power utilization ports (B1, B2), the electric energy output control circuit 102 is disposed between the electric energy output ends (A1, A2) of the voltage conversion circuit 102 and the power utilization ports (B1, B2), and the electric energy output control circuit 101 is configured to turn off the output of the voltage conversion circuit 102 when the output current of the voltage conversion circuit 102 does not satisfy the preset range.
In an embodiment of the application, the load may be connected through the power utilization ports (B1, B2). The power output circuit can control the power output ends (A1, A2) of the voltage conversion circuit 102 to output power to the loads connected to the power utilization ports (B1, B2).
The energy storage device provided by the embodiment of the application determines that the current sampling unit has a fault when the first switch module of the output control circuit 101 is in a conducting state and the output current is not within the preset range, outputs a turn-off signal to the voltage conversion circuit 102 by using the control circuit, and controls the voltage conversion circuit 102 to stop outputting electric energy, so that the safety problem caused when the current sampling unit of the energy storage device fails can be avoided, and the discharging safety performance of the energy storage device is improved.
The above embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims (10)

1. A power output control circuit, comprising:
the current sampling unit is used for being connected with the electric energy output end of the voltage conversion circuit; the current sampling unit is used for collecting the output current of the voltage conversion circuit;
the load simulation circuit is connected in parallel with the electric energy output end of the voltage conversion circuit and comprises a first switch module and a power consumption module; the first switch module and the power dissipation module are connected in series;
the control circuit is respectively connected with the current sampling unit and the first switch module and is used for controlling the first switch module to be conducted when a first control signal is received so as to enable the power consumption module, the current sampling unit and the electric energy output end of the voltage conversion circuit to form a test loop; the control circuit is further configured to obtain an output current of the voltage conversion circuit through the current sampling unit, and output a turn-off signal to the voltage conversion circuit when the first switch module is in a conducting state and the output current is not within a preset range; the turn-off signal is used for controlling the voltage conversion circuit to stop outputting the electric energy.
2. The power output control circuit of claim 1, further comprising a drive circuit; the driving circuit is connected between the control circuit and the first switch module; the driving circuit is used for driving the first switch module to be switched on or switched off according to the control of the control circuit.
3. The power output control circuit of claim 2, wherein the drive circuit comprises:
a controlled end of the first switch tube is connected with an output end of the control circuit, a first end of the first switch tube is grounded, and a second end of the first switch tube is used as an output end of the driving circuit;
the first resistor is connected between the controlled end of the first switch tube and the first end of the first switch tube.
4. The power output control circuit of claim 2, wherein the drive circuit comprises:
a first end of the first switch tube is grounded, and a second end of the first switch tube is used as an output end of the driving circuit;
the first resistor is connected between the controlled end of the first switch tube and the first end of the first switch tube;
the first capacitor is connected between the controlled end of the first switch tube and the first end of the first switch tube;
and the second resistor is connected between the output end of the control circuit and the controlled end of the first switching tube.
5. The power output control circuit of claim 1, wherein the control circuit is further configured to output a second control signal to the first switch module when the output current satisfies a predetermined range; the first switch module is turned off when receiving the second control signal.
6. The power output control circuit according to claim 1, characterized in that the power output control circuit further comprises:
the alarm circuit is connected with the control circuit; the control circuit is further used for generating alarm information when the first switch module is in a conducting state and the output current is not in the preset range; the alarm circuit is used for giving an alarm in at least one of a sound form, an optical form and an electrical form when receiving the alarm information.
7. The power output control circuit of claim 2, wherein the first switch module comprises:
the relay comprises a coil and a switch part, wherein a first end of the coil is connected with a second end of the driving circuit, the second end of the coil is used for being connected with a first power supply, and the switch part is connected with the power consumption module in series; the relay closes the switch section when the coil is energized.
8. The power output control circuit of claim 7, wherein the first switch module further comprises:
and the anode of the diode is connected with the first end of the coil, the cathode of the diode is connected with the first power supply, and the diode forms a loop for releasing the electric energy of the coil when the relay is turned off.
9. The power output control circuit of claim 7, wherein the power dissipation module comprises:
and the third resistor is connected with the switch part in series.
10. An energy storage device comprising a voltage conversion circuit and a power output control circuit as claimed in any one of claims 1 to 9.
CN202221614670.9U 2022-06-23 2022-06-23 Electric energy output control circuit and energy storage equipment Active CN218102942U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202221614670.9U CN218102942U (en) 2022-06-23 2022-06-23 Electric energy output control circuit and energy storage equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202221614670.9U CN218102942U (en) 2022-06-23 2022-06-23 Electric energy output control circuit and energy storage equipment

Publications (1)

Publication Number Publication Date
CN218102942U true CN218102942U (en) 2022-12-20

Family

ID=84476400

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202221614670.9U Active CN218102942U (en) 2022-06-23 2022-06-23 Electric energy output control circuit and energy storage equipment

Country Status (1)

Country Link
CN (1) CN218102942U (en)

Similar Documents

Publication Publication Date Title
EP3096430B9 (en) Electric vehicle and power supply circuit for a vehicle control device with alternating current charging thereof
JP7244632B2 (en) Composite current collectors, electrode sheets, electrochemical devices and electronic devices
EP3067708B1 (en) Self-test module of electronic circuit breaker
CN109263491A (en) Failure system for prompting when applied to electric car charging
CN210838007U (en) Battery equalization circuit and power supply device
CN102282736B (en) Switch control circuit for power supply and power supplying circuit
CN218102942U (en) Electric energy output control circuit and energy storage equipment
CN108680864B (en) Storage battery discharge testing device and method with undervoltage protection
CN104600763A (en) Under-voltage protection circuit and lamp
CN203942322U (en) Automobile programming power supply
CN216718534U (en) Voltage sampling circuit and voltage sampling system
CN111381153A (en) Relay contact state detection circuit and state detection method thereof, and electric automobile
KR100530691B1 (en) Charging voltage automatic selection battery charger
CN105006849A (en) Intelligent switching-off control system of battery charger
CN210348270U (en) Loop state detection device and detector
CN113341310A (en) High limit of battery system and low limit contactor adhesion detection circuitry
CN112255540A (en) Adhesion fault detection circuit of low-side contactor
CN216956235U (en) Automatic discharge system and device for inverter plate
JP2930333B2 (en) Power plug disconnection detection device
CN219893175U (en) DC-DC conversion circuit, DC-DC conversion equipment, low-voltage power supply circuit and vehicle
CN217590235U (en) Protection circuit, protection device, earth leakage protection control circuit and earth leakage protection switch
CN209591919U (en) A kind of relay acceleration unlatching circuit
CN216013586U (en) High limit of battery system and low limit contactor adhesion detection circuitry
CN219643653U (en) Power supply switching circuit
CN215575534U (en) Direct current injection type detection circuit, power battery output circuit and electric automobile

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CP02 Change in the address of a patent holder

Address after: 518000, 1st Floor, Building E, Jiehe Industrial City, Shuitian Community, Shiyan Street, Bao'an District, Shenzhen City, Guangdong Province

Patentee after: Shenzhen Zhenghao Innovation Technology Co.,Ltd.

Address before: 518000 workshop A202, Founder science and Technology Industrial Park, north of Songbai highway, Longteng community, Shiyan street, Bao'an District, Shenzhen City, Guangdong Province

Patentee before: Shenzhen Zhenghao Innovation Technology Co.,Ltd.

CP02 Change in the address of a patent holder
CP03 Change of name, title or address

Address after: 518000 Factory Building 401, Runheng Industrial Plant 1, Fuyuan Road, Zhancheng Community, Fuhai Street, Bao'an District, Shenzhen City, Guangdong Province

Patentee after: Shenzhen Zhenghao Innovation Technology Co.,Ltd.

Country or region after: China

Address before: 518000, 1st Floor, Building E, Jiehe Industrial City, Shuitian Community, Shiyan Street, Bao'an District, Shenzhen City, Guangdong Province

Patentee before: Shenzhen Zhenghao Innovation Technology Co.,Ltd.

Country or region before: China

CP03 Change of name, title or address