Integrated circuit breaker applied to energy storage confluence cabinet and energy storage confluence cabinet

Abstract

The integrated circuit breaker comprises an electric energy detection module, a circuit breaker switch and a control circuit, the circuit breaker switch is connected between a power grid and a load, the electric energy detection module is connected with the circuit breaker switch, and the control circuit is connected with the circuit breaker switch. The electric energy parameters on the circuit breaker are consistent with the electric energy parameters on the circuit between the power grid and the load, so that the electric energy detection module is connected with the circuit breaker, the electric energy parameters on the circuit can be detected, in addition, the control circuit is connected with the BAU, and the electric energy parameters are transmitted to the BAU, so that the BAU displays the electric energy parameters. The electric energy detection module, the cut-out switch and the control circuit are integrated into the circuit breaker, the distance between devices in the circuit breaker is small, the BAU is reused for displaying electric energy parameters, the circuit between a power grid and a load can be protected, the occupied space of the energy storage confluence cabinet can be reduced, and the energy storage confluence cabinet is more convenient to use. Therefore, the size of the energy storage confluence cabinet is reduced.

Description

Technical Field

[0001] This utility model relates to the field of power conversion, and in particular to an integrated circuit breaker and energy storage combiner cabinet used in energy storage combiner cabinets. Background Technology

[0002] Energy storage combiner cabinets typically include a battery cluster combiner module and a low-voltage distribution module. The battery cluster combiner module combines the DC power output from multiple parallel battery clusters in the energy storage system to the DC bus, forming a unified DC output, which is then transmitted to the voltage conversion module. The voltage conversion module converts the DC power on the DC bus into AC power before connecting it to the grid. The low-voltage distribution unit connects the grid and the load and includes a circuit breaker and a multi-function energy meter. The multi-function energy meter collects and displays the electrical parameters of the circuit between the grid and the load. When an abnormality occurs in the circuit between the grid and the load, such as an overcurrent or overload, the circuit breaker automatically disconnects to protect the circuit.

[0003] In the existing technology, the circuit breakers and multi-function energy meters in the low-voltage power distribution unit are decoupled from each other. Therefore, the circuit breakers and multi-function energy meters are set separately in hardware, that is, there is a large distance between the circuit breakers and multi-function meters, which occupies a large amount of internal space in the energy storage combiner cabinet, resulting in a large size of the energy storage combiner cabinet, which is inconvenient for the installation and application of the energy storage combiner cabinet. Utility Model Content

[0004] The purpose of this invention is to provide an integrated circuit breaker and energy storage combiner cabinet for use in energy storage combiner cabinets. The power detection module, circuit breaker, and control circuit are integrated into one circuit breaker. The components in the circuit breaker are spaced relatively close together, and the BAU is reused to display the power parameters. This not only protects the circuit between the power grid and the load, but also reduces the space occupied by the energy storage combiner cabinet, thereby reducing the size of the energy storage combiner cabinet.

[0005] To solve the above-mentioned technical problems, this utility model provides an integrated circuit breaker for use in energy storage combiner cabinets, including an energy detection module, a circuit breaker and a control circuit;

[0006] The first terminal of the circuit breaker is connected to the power grid, and the second terminal is connected to the load; the power detection module is connected to the circuit breaker; the first input terminal of the control circuit is connected to the output terminal of the power detection module, and the output terminal is connected to the BAU battery array management unit.

[0007] The control circuit is used to transmit the power parameters of the circuit between the power grid and the load collected by the power detection module to the BAU so that the BAU can display the power parameters. The circuit breaker is used to shut off when an abnormality occurs in the circuit between the power grid and the load.

[0008] Preferably, the power detection module includes a current detection module;

[0009] The input terminal of the current detection module is connected to the circuit breaker, and the output terminal is connected to the first input terminal of the control circuit, for collecting the current in the circuit between the power grid and the load.

[0010] Preferably, the current detection module includes a current sensor, the primary coil of which is wound around a wire between the power grid and the circuit breaker to sense the current in the circuit between the power grid and the load; the secondary coil of which is connected to the first input terminal of the control circuit to sense the current in the primary coil and transmit it to the control circuit.

[0011] Preferably, the circuit breaker includes a first current acquisition transformer, a second current acquisition transformer, a third current acquisition transformer, contacts of the first circuit breaker, contacts of the second circuit breaker, contacts of the third circuit breaker, contacts of the fourth circuit breaker, and a trip unit.

[0012] The contacts of the first circuit breaker are connected between the first AC phase line of the power grid and the first AC phase line of the load; the contacts of the second circuit breaker are connected between the second AC phase line of the power grid and the second AC phase line of the load; the contacts of the third circuit breaker are connected between the third AC phase line of the power grid and the third AC phase line of the load; and the contacts of the fourth circuit breaker are connected between the neutral line of the power grid and the neutral line of the load.

[0013] The primary coil of the first current-sensing transformer is wound on the conductor between the first AC phase line of the power grid and the first AC phase line of the load, for sensing the current between the first AC phase line of the power grid and the first AC phase line of the load; the primary coil of the second current-sensing transformer is wound on the conductor between the second AC phase line of the power grid and the second AC phase line of the load, for sensing the current between the second AC phase line of the power grid and the second AC phase line of the load; the primary coil of the third current-sensing transformer is wound on the conductor between the third AC phase line of the power grid and the third AC phase line of the load, for sensing the current between the third AC phase line of the power grid and the third AC phase line of the load.

[0014] The secondary coils of the first current-collecting transformer, the second current-collecting transformer, and the third current-collecting transformer are connected to the input terminal of the trip unit, for transmitting the current on the primary coils of the first current-collecting transformer, the second current-collecting transformer, and the third current-collecting transformer to the trip unit;

[0015] The output terminal of the trip unit is connected to the control terminals of the contacts of the first circuit breaker, the second circuit breaker, the third circuit breaker, and the fourth circuit breaker, respectively, and is used to control the contacts of the first circuit breaker, the second circuit breaker, the third circuit breaker, and the fourth circuit breaker to turn off when the current between any AC phase line between the power grid and the load is greater than a preset current threshold.

[0016] Preferably, the power detection module includes a voltage detection module;

[0017] The voltage detection module has a first input terminal connected to the contact of the first circuit breaker, a second input terminal connected to the contact of the second circuit breaker, a third input terminal connected to the contact of the third circuit breaker, and an output terminal connected to the first input terminal of the control circuit. It is used to collect the voltage difference between at least two AC phase lines on the circuit between the power grid and the load, and transmit it to the control circuit.

[0018] Preferably, it further includes a first fuse, a second fuse, and a third fuse;

[0019] The first fuse is connected between the contacts of the first circuit breaker and the first input terminal of the voltage detection module; the second fuse is connected between the contacts of the second circuit breaker and the second input terminal of the voltage detection module; and the third fuse is connected between the contacts of the third circuit breaker and the third input terminal of the voltage detection module.

[0020] The first fuse, the second fuse, and the third fuse are used to disconnect when the current flowing through them is greater than the protection current.

[0021] Preferably, it also includes an alarm module;

[0022] The alarm module is connected to the control circuit and is used to issue an alarm when the control circuit determines that the power parameters are abnormal.

[0023] Preferably, the control circuit includes an energy parameter acquisition module and a control module;

[0024] The input terminal of the power parameter acquisition module is connected to the output terminal of the power detection module, and is used to acquire the power parameters of the circuit between the power grid and the load collected by the power detection module.

[0025] The input terminal of the control module is connected to the output terminal of the power parameter acquisition module, and is used to transmit the power parameters of the circuit between the power grid and the load collected by the power detection module to the BAU.

[0026] Preferably, the control circuit further includes a communication module; the control module is connected to the control terminal of the circuit breaker; the communication module is connected to the control module and the BAU;

[0027] The control module transmits the power parameters to the BAU through the communication module, and the BAU transmits the received circuit breaker turn-off command to the control circuit through the communication module, so that the control circuit controls the circuit breaker to turn off when it receives the circuit breaker turn-off command.

[0028] To solve the above-mentioned technical problems, this utility model also provides an energy storage combiner cabinet, including the integrated circuit breaker as described above for use in the energy storage combiner cabinet.

[0029] This application provides an integrated circuit breaker and energy storage combiner cabinet for use in energy storage combiner cabinets. The integrated circuit breaker includes a power detection module, a circuit breaker switch, and a control circuit. The circuit breaker switch is connected between the power grid and the load, while the power detection module is connected to the circuit breaker switch. The power parameters on the circuit breaker switch are consistent with the power parameters of the circuit between the power grid and the load. Therefore, by connecting the power detection module to the circuit breaker switch, the power parameters of the circuit can be detected. Furthermore, the control circuit is connected to the circuit breaker access unit (BAU) to transmit the power parameters to the BAU for display. In this application, the power detection module, circuit breaker switch, and control circuit are integrated into a single circuit breaker. The components within the circuit breaker are space-efficient, and the BAU is reused for power parameter display. This not only protects the circuit between the power grid and the load but also reduces the space occupied by the energy storage combiner cabinet, thereby reducing its size. Attached Figure Description

[0030] To more clearly illustrate the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 A schematic diagram of the structure of an integrated circuit breaker used in an energy storage combiner cabinet provided by this utility model;

[0032] Figure 2 This is a schematic diagram of the structure of a circuit breaker used in an energy storage combiner cabinet in the prior art;

[0033] Figure 3 This utility model provides a specific structural schematic diagram of an integrated circuit breaker applied in an energy storage combiner cabinet. Detailed Implementation

[0034] The core of this utility model is to provide an integrated circuit breaker and energy storage combiner cabinet for use in energy storage combiner cabinets. The power detection module, circuit breaker and control circuit are integrated into one circuit breaker. The spacing between the components in the circuit breaker is small, and the BAU is reused to display the power parameters. It can not only protect the circuit between the power grid and the load, but also reduce the space occupied by the energy storage combiner cabinet, thereby reducing the size of the energy storage combiner cabinet.

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0036] Please refer to Figure 1 , Figure 1 The present invention provides a structural schematic diagram of an integrated circuit breaker used in an energy storage combiner cabinet, including an energy detection module, a circuit breaker switch, and a control circuit;

[0037] The first end of the circuit breaker 2 is connected to the power grid, and the second end is connected to the load; the power detection module 1 is connected to the circuit breaker 2; the first input end of the control circuit 3 is connected to the output end of the power detection module 1, and the output end is connected to the BAU battery array management unit.

[0038] The control circuit 3 is used to transmit the power parameters of the circuit between the power grid and the load collected by the power detection module 1 to the BAU so that the BAU can display the power parameters. The circuit breaker 2 is used to shut off when an abnormality occurs in the circuit between the power grid and the load.

[0039] The circuit breaker in the energy storage combiner cabinet is located between the power grid and the load. Please refer to [reference needed]. Figure 2 , Figure 2This is a schematic diagram of a circuit breaker used in an energy storage combiner cabinet in the prior art. When the circuit breaker is on, the power grid can supply power to the load; when the circuit breaker is off, the circuit between the power grid and the load is also broken, and the load loses power. In addition, the energy storage combiner cabinet is equipped with a multi-function energy meter, which can collect and display the electrical parameters of the circuit between the power grid and the load. Therefore, in the prior art, the multi-function energy meter is connected to the circuit between the power grid and the load and is equipped with an energy parameter display module to display the collected electrical parameters. Since the circuit breaker and the multi-function energy meter are relatively decoupled in terms of function, their hardware connections are unrelated. Therefore, in the prior art, the circuit breaker and the multi-function energy meter are usually not installed together, and there is often a large gap between them. The combined space occupied by multiple circuit breakers and multi-function energy meters in the energy storage combiner cabinet is relatively large.

[0040] In this application, the circuit breaker 2, the power detection module 1, and the control circuit 3 are integrated into a single circuit breaker. The circuit breaker 2 is connected between the power grid and the load. When the circuit breaker 2 is on, the power grid can supply power to the load. When the circuit breaker 2 is off, the circuit between the power grid and the load is also disconnected, and the load is de-energized, thus providing circuit protection for the circuit between the load and the power grid. The power detection module 1 is connected to the circuit breaker 2. When the circuit breaker 2 is on, the power parameters on the circuit breaker 2 are the power parameters of the circuit between the power grid and the load. The power parameters of the circuit between the power grid and the load are collected and directly transmitted to the control circuit 3. The control circuit 3 does not directly display the power parameters, but instead uses a BAU (Battery Array Unit) to display the power parameters. Furthermore, since the circuit breaker 2, control circuit 3, and power detection module 1 are all integrated into the relay, that is, the circuit breaker 2, power detection module 1, and control circuit 3 are integrated onto a single circuit board, the control circuit 3 and power detection module 1 are both onboard circuits. This simplifies the wiring and layout within the energy storage combiner cabinet, saves space inside the circuit breaker, and thus reduces the overall size of the energy storage combiner cabinet.

[0041] Among them, BAU is the highest level in the Battery Management System (BMS). Its main function is to centrally manage and coordinate the batteries in the entire energy storage system, ensuring the safe and reliable operation of the batteries under various operating conditions. Therefore, this application directly reuses BAU to display power parameters. Users can not only view the status of the batteries in the energy storage system through BAU, but also view the status of the circuit between the power grid and the load through the above power parameters. This reduces the space occupation of the energy storage combiner cabinet while facilitating users to observe the status of the entire power supply system globally.

[0042] When circuit breaker 2 protects the circuit, it specifically disconnects immediately when an abnormality occurs in the circuit, such as overcurrent, overvoltage, or overload, in order to protect the circuit and prevent the components in the circuit from being burned out or damaged.

[0043] It should be noted that the load can be an air conditioning or refrigeration device for cooling the energy storage combiner cabinet, and this application does not limit this.

[0044] In addition, the control circuit 3 can determine the conduction status of the circuit breaker 2 based on the power parameters detected by the power detection module 1, and send the conduction status to the BAU for display, so that the user can view the conduction status of the circuit breaker through the BAU.

[0045] In summary, the power detection module 1, circuit breaker 2, and control circuit 3 in this application are integrated into a single circuit breaker, and the BAU is reused for displaying power parameters. This not only protects the circuit between the power grid and the load but also reduces the space occupied by the energy storage combiner cabinet, thereby reducing its size.

[0046] Based on the above embodiments:

[0047] Please refer to Figure 3 , Figure 3 This utility model provides a specific structural schematic diagram of an integrated circuit breaker applied in an energy storage combiner cabinet.

[0048] In a preferred embodiment, the power detection module 1 includes a current detection module;

[0049] The input terminal of the current detection module is connected to the circuit breaker 2, and the output terminal is connected to the first input terminal of the control circuit 3, which is used to collect the current in the circuit between the power grid and the load.

[0050] In this embodiment, the power detection module 1 includes a current detection module, which collects the current in the circuit between the power grid and the load and transmits the collected current to the control circuit 3. The control circuit 3 transmits the current to the BAU for display, so that the user can check whether the current in the circuit between the power grid and the load is too large or too small, and perform maintenance processing based on this to check whether there are any abnormalities in the circuit.

[0051] In a preferred embodiment, the current detection module includes a current sensor, the primary coil of which is wound around a wire between the power grid and the circuit breaker 2 to sense the current in the circuit between the power grid and the load; the secondary coil of which is connected to the first input terminal of the control circuit to sense the current in the primary coil and transmit it to the control circuit.

[0052] The current detection module mainly includes a current sensor, which in turn includes a primary coil and a secondary coil. The primary coil is wound around the wires of the circuit between the power grid and the circuit breaker 2. That is, the current in the primary coil is the current sensed in the circuit between the power grid and the load. The secondary coil then senses the current between the primary and secondary coils to obtain the current in the circuit between the power grid and the load and transmits it to the control circuit 3. The control circuit 3 detects the current in the secondary coil and determines the current in the primary coil based on the turns ratio between the primary and secondary coils, thereby determining the current in the circuit between the power grid and the load.

[0053] When the control circuit 3 acquires the current in the secondary coil, it can do so using a voltage divider and an amplifier. The voltage divider can be a sampling resistor connected in parallel across the secondary coil, and the amplifier is connected in parallel across the sampling resistor. The amplifier amplifies the voltage across the sampling resistor, allowing the control circuit 3 to determine the current in the secondary coil based on the amplified voltage and the resistance value of the sampling resistor. Both the voltage divider and the amplifier are onboard components.

[0054] When setting the turns ratio between the primary and secondary coils, the turns ratio can be set to a number greater than 1, such as a turns ratio of 100:5. This means the number of turns in the primary coil is greater than the number of turns in the secondary coil, so that the current in the secondary coil is less than the current in the primary coil. This avoids inputting a large current into the control circuit 3, which could cause the devices in the control circuit 3 to burn out or be damaged. Of course, this application does not limit the actual setting of the turns ratio.

[0055] In addition, current is collected by a current sensor, and the isolation between the primary and secondary coils can effectively isolate high voltage and high current, ensuring the safety of the measurement circuit and personnel.

[0056] In a preferred embodiment, the circuit breaker 2 includes a first current acquisition transformer, a second current acquisition transformer, a third current acquisition transformer, contacts of the first circuit breaker, contacts of the second circuit breaker, contacts of the third circuit breaker, contacts of the fourth circuit breaker, and a trip unit.

[0057] The contacts of the first circuit breaker are connected between the first AC phase line of the power grid and the first AC phase line of the load; the contacts of the second circuit breaker are connected between the second AC phase line of the power grid and the second AC phase line of the load; the contacts of the third circuit breaker are connected between the third AC phase line of the power grid and the third AC phase line of the load; the contacts of the fourth circuit breaker are connected between the neutral line of the power grid and the neutral line of the load.

[0058] The primary coil of the first current-sensing transformer is wound on the conductor between the first AC phase line of the power grid and the first AC phase line of the load, and is used to sense the current between the first AC phase line of the power grid and the first AC phase line of the load; the primary coil of the second current-sensing transformer is wound on the conductor between the second AC phase line of the power grid and the second AC phase line of the load, and is used to sense the current between the second AC phase line of the power grid and the second AC phase line of the load; the primary coil of the third current-sensing transformer is wound on the conductor between the third AC phase line of the power grid and the third AC phase line of the load, and is used to sense the current between the third AC phase line of the power grid and the third AC phase line of the load.

[0059] The secondary coils of the first current acquisition transformer, the second current acquisition transformer, and the third current acquisition transformer are connected to the input terminal of the trip unit to transmit the current on the primary coils of the first current acquisition transformer, the second current acquisition transformer, and the third current acquisition transformer to the trip unit.

[0060] The output terminal of the trip unit is connected to the control terminal of the contacts of the first circuit breaker, the second circuit breaker, the third circuit breaker, and the fourth circuit breaker, respectively. It is used to control the contacts of the first circuit breaker, the second circuit breaker, the third circuit breaker, and the fourth circuit breaker to turn off when the current between any AC phase line between the power grid and the load is greater than a preset current threshold.

[0061] In this embodiment, considering that the power grid outputs alternating current when supplying power to the load, the power grid and the load are connected through three AC phase lines and a neutral line. Based on this, a circuit breaker 2 needs to be set between each AC phase line of the power grid and each AC phase line of the load to ensure that when an abnormality occurs in the circuit, the circuit between the power grid and the load is disconnected after the contacts of the circuit breaker 2 between each phase line are closed.

[0062] A circuit breaker contact is connected in series between each AC phase line of the power grid and each AC phase line of the load. A primary winding of a current-collecting transformer is wound around the conductor connecting each AC phase line of the power grid and each AC phase line of the load. The secondary windings of each current transformer are then connected to a trip unit. This transmits the current on each AC phase line between the power grid and the load to the trip unit. The trip unit controls the contacts of the four circuit breakers to close when the current on any AC phase line between the power grid and the load exceeds a preset current threshold. For example, based on the preset current threshold and the turns ratio between the primary and secondary windings of each current-collecting transformer, a preset current threshold for the secondary winding is determined. If the current on the secondary winding exceeds the preset current threshold, then the current on the primary winding exceeds the preset current threshold. This indicates that the current on a certain AC phase line between the power grid and the load exceeds the preset threshold. In this case, the trip unit simultaneously controls the contacts of the first, second, third, and fourth circuit breakers to close, thus disconnecting the circuit between the power grid and the load and achieving circuit protection.

[0063] In this embodiment, the current acquisition transformer can reuse the current sensor in the current detection module to reduce cost and space. Of course, this application does not limit this.

[0064] It should be noted that the trip unit can be either a thermal trip unit or an electromagnetic trip unit. If it is a thermal trip unit, when the current on any AC phase line between the power grid and the load exceeds a preset current threshold, the thermal trip unit will heat up due to the current flow. Thermal trip units are typically made of a bimetallic strip, which bends when heated. When the bend reaches a certain degree, it will push the free-trip mechanism of the circuit breaker contacts to open, thereby disconnecting the circuit and achieving overload protection. If it is an electromagnetic trip unit, when the current on any AC phase line between the power grid and the load exceeds a preset current threshold, the current increases sharply. The electromagnetic force generated by the electromagnetic trip unit coil also increases rapidly. This electromagnetic force attracts the armature of the circuit breaker contacts, causing the armature to actuate, which in turn drives the free-trip mechanism to quickly disconnect the circuit breaker contacts, cutting off the circuit and achieving short-circuit protection.

[0065] Of course, both thermal trip unit and electromagnetic trip unit can be set at the same time, or only thermal trip unit or electromagnetic trip unit can be set. This application does not limit this.

[0066] In a preferred embodiment, the power detection module 1 includes a voltage detection module;

[0067] The first input terminal of the voltage detection module is connected to the contact of the first circuit breaker, the second input terminal is connected to the contact of the second circuit breaker, the third input terminal is connected to the contact of the third circuit breaker, and the output terminal is connected to the first input terminal of the control circuit. It is used to collect the voltage difference between at least two AC phase lines on the circuit between the power grid and the load, and transmit it to the control circuit 3.

[0068] In this embodiment, the power detection module 1 includes a voltage detection module, which detects the voltage in the circuit and transmits it to the control circuit 3. The control circuit 3 then displays the voltage in the circuit via the BAU, so that the user can check whether the voltage in the circuit between the power grid and the load is too high or too low, and perform maintenance to check for any abnormalities in the circuit.

[0069] It should be noted that the voltage detection module is connected to the contacts of the first circuit breaker 2, the second circuit breaker 2, and the third circuit breaker 2, thereby collecting at least one of the following voltage differences: the voltage difference between the first and second AC phase lines, the voltage difference between the second and third AC phase lines, and the voltage difference between the third AC phase lines. Based on this, the user can determine the AC voltage between the power grid and the load by using the voltage difference between the AC phase lines displayed by the BAU, thus determining whether the power grid is supplying power to the load normally.

[0070] In a preferred embodiment, it further includes a first fuse, a second fuse, and a third fuse;

[0071] The first fuse is connected between the contact of the first circuit breaker 2 and the first input terminal of the voltage detection module; the second fuse is connected between the contact of the second circuit breaker 2 and the second input terminal of the voltage detection module; and the third fuse is connected between the contact of the third circuit breaker 2 and the third input terminal of the voltage detection module.

[0072] The first, second, and third fuses are used to disconnect when the current flowing through them exceeds the protection current.

[0073] By installing fuses between the voltage detection module and each AC phase line, the circuit can be disconnected in time when there is a large current between the power grid and the load, thus protecting the voltage detection module and the control circuit 3.

[0074] In a preferred embodiment, the control circuit 3 includes an energy parameter acquisition module and a control module;

[0075] The input terminal of the power parameter acquisition module is connected to the output terminal of the power detection module 1, and is used to acquire the power parameters of the circuit between the power grid and the load collected by the power detection module 1.

[0076] The input terminal of the control module is connected to the output terminal of the power parameter acquisition module, and is used to transmit the power parameters of the circuit between the power grid and the load collected by the power detection module 1 to the BAU.

[0077] In this embodiment, the control circuit 3 includes an energy parameter acquisition module and a control module. The energy parameter acquisition module is used to acquire the energy parameters collected by the energy detection module 1, such as the current detected by the current detection module and / or the voltage detected by the voltage detection module. The energy parameter acquisition module may include a filter and an amplifier to filter and amplify the current and / or voltage, thereby ensuring the accuracy of the energy parameters on the circuit displayed by the BAU.

[0078] In a preferred embodiment, the control circuit 3 further includes a communication module; the control module is connected to the control terminal of the circuit breaker 2; the communication module is connected to the control module and the BAU;

[0079] The control module transmits the power parameters to the BAU through the communication module. The BAU transmits the received circuit breaker turn-off command to the control circuit 3 through the communication module, so that the control circuit 3 controls the circuit breaker switch 2 to turn off when it receives the circuit breaker turn-off command.

[0080] The control circuit 3 in this embodiment also includes a communication module. The control module transmits data with the BAU through the communication module. Therefore, the control module can send power signals to the BAU for display through the communication module. Furthermore, when the BAU receives a circuit breaker off command, it can directly send the circuit breaker off command to the control module through the communication module, so that the control module can control the circuit breaker switch 2 to turn off according to the circuit breaker off command, thereby achieving remote control of the circuit breaker switch 2. Of course, the BAU can also send a circuit breaker on command to the control module through the communication module after receiving it, so that the control module can control the circuit breaker switch 2 to turn on based on the circuit breaker on command.

[0081] When controlling circuit breaker 2, the coil of circuit breaker 2 can be energized or de-energized to cause the coil to attract or release the contacts of circuit breaker 2, thereby turning circuit breaker 2 on or off. If the contacts of circuit breaker 2 are normally closed, the contacts will be closed and conducting when the coil of circuit breaker 2 is not energized. When a circuit breaker off command is received, the coil can be energized to attract the contacts and open them. If the contacts of circuit breaker 2 are normally open, the contacts will be closed and off when the coil of circuit breaker 2 is not energized. When a circuit breaker off command is received, the coil can be de-energized to release the contacts and open them.

[0082] It should be noted that the communication module and the BAU can communicate via the 485 communication protocol, and this application does not limit this.

[0083] Of course, the circuit breaker 2 can also be manually turned on by the user, and this application does not limit this.

[0084] In addition, the control circuit 3 can determine whether there is a phase loss abnormality in the circuit between the power grid and the load based on the voltage difference between any two AC phase lines detected by the voltage detection module. If so, the phase loss can be indicated by the BAU and the contacts of the circuit breaker 2 can be turned off.

[0085] As a preferred embodiment, it also includes an alarm module;

[0086] The alarm module is connected to the control circuit 3 and is used to trigger an alarm when the control circuit 3 determines that the power parameters are abnormal.

[0087] This embodiment also includes an alarm module. When the control circuit 3 detects an abnormality in the power parameters, it triggers an alarm through the alarm module to prompt the user to maintain the circuit. For example, if the power parameters include voltage and current, when the voltage exceeds the preset protection voltage and / or the current exceeds the preset protection current, the control circuit 3 controls the alarm module to trigger an alarm. If the circuit breaker 2 fails to trip under protection at this time, the control circuit 3 can also use the alarm module to indicate that the circuit breaker 2 has not tripped under protection, allowing the user to manually trip the circuit breaker 2.

[0088] It should be noted that since the power parameters are displayed through the BAU in this application, the BAU can also be reused as an alarm module. The BAU can provide alarms by flashing lights or displaying prompts, making it easier for users to check the alarm type and determine the cause of the abnormality in the circuit.

[0089] The alarm module can also be an audible alarm module, such as a speaker or buzzer, so that users can be notified of abnormalities in the circuit in a timely manner when it is inconvenient to check the BAU, and perform maintenance promptly.

[0090] In addition, this application may also include a temperature detection module, which is connected to the control circuit 3 to collect the temperature in the relay and transmit it to the control circuit 3 so that the control circuit 3 can control the circuit breaker 2 to turn off when the temperature is greater than the preset temperature threshold and provide an over-temperature warning through the BAU.

[0091] To solve the above-mentioned technical problems, this utility model also provides an energy storage combiner cabinet, including the integrated circuit breaker as described above for use in the energy storage combiner cabinet.

[0092] For an introduction to the energy storage combiner cabinet provided by this utility model, please refer to the above embodiment of the integrated circuit breaker applied in the energy storage combiner cabinet. This utility model will not be described again here.

[0093] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0094] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An integrated circuit breaker used in an energy storage combiner cabinet, characterized in that, Includes a power detection module, a circuit breaker, and a control circuit; The first terminal of the circuit breaker is connected to the power grid, and the second terminal is connected to the load; the power detection module is connected to the circuit breaker; the first input terminal of the control circuit is connected to the output terminal of the power detection module, and the output terminal is connected to the BAU battery array management unit. The control circuit is used to transmit the power parameters of the circuit between the power grid and the load collected by the power detection module to the BAU so that the BAU can display the power parameters. The circuit breaker is used to shut off when an abnormality occurs in the circuit between the power grid and the load.

2. The integrated circuit breaker applied in an energy storage combiner cabinet as described in claim 1, characterized in that, The power detection module includes a current detection module; The input terminal of the current detection module is connected to the circuit breaker, and the output terminal is connected to the first input terminal of the control circuit, for collecting the current in the circuit between the power grid and the load.

3. The integrated circuit breaker applied in an energy storage combiner cabinet as described in claim 2, characterized in that, The current detection module includes a current sensor. The primary coil of the current sensor is wound around the wire between the power grid and the circuit breaker to sense the current in the circuit between the power grid and the load. The secondary coil of the current sensor is connected to the first input terminal of the control circuit to sense the current in the primary coil and transmit it to the control circuit.

4. The integrated circuit breaker applied in an energy storage combiner cabinet as described in claim 1, characterized in that, The circuit breaker includes a first current acquisition transformer, a second current acquisition transformer, a third current acquisition transformer, contacts of the first circuit breaker, contacts of the second circuit breaker, contacts of the third circuit breaker, contacts of the fourth circuit breaker, and a trip unit. The contacts of the first circuit breaker are connected between the first AC phase line of the power grid and the first AC phase line of the load; the contacts of the second circuit breaker are connected between the second AC phase line of the power grid and the second AC phase line of the load; the contacts of the third circuit breaker are connected between the third AC phase line of the power grid and the third AC phase line of the load; and the contacts of the fourth circuit breaker are connected between the neutral line of the power grid and the neutral line of the load. The primary coil of the first current-sensing transformer is wound on the conductor between the first AC phase line of the power grid and the first AC phase line of the load, for sensing the current between the first AC phase line of the power grid and the first AC phase line of the load; the primary coil of the second current-sensing transformer is wound on the conductor between the second AC phase line of the power grid and the second AC phase line of the load, for sensing the current between the second AC phase line of the power grid and the second AC phase line of the load; the primary coil of the third current-sensing transformer is wound on the conductor between the third AC phase line of the power grid and the third AC phase line of the load, for sensing the current between the third AC phase line of the power grid and the third AC phase line of the load. The secondary coils of the first current-collecting transformer, the second current-collecting transformer, and the third current-collecting transformer are connected to the input terminal of the trip unit, for transmitting the current on the primary coils of the first current-collecting transformer, the second current-collecting transformer, and the third current-collecting transformer to the trip unit; The output terminal of the trip unit is connected to the control terminals of the contacts of the first circuit breaker, the second circuit breaker, the third circuit breaker, and the fourth circuit breaker, respectively, and is used to control the contacts of the first circuit breaker, the second circuit breaker, the third circuit breaker, and the fourth circuit breaker to turn off when the current between any AC phase line between the power grid and the load is greater than a preset current threshold.

5. The integrated circuit breaker applied in an energy storage combiner cabinet as described in claim 4, characterized in that, The power detection module includes a voltage detection module; The voltage detection module has a first input terminal connected to the contact of the first circuit breaker, a second input terminal connected to the contact of the second circuit breaker, a third input terminal connected to the contact of the third circuit breaker, and an output terminal connected to the first input terminal of the control circuit. It is used to collect the voltage difference between at least two AC phase lines on the circuit between the power grid and the load, and transmit it to the control circuit.

6. The integrated circuit breaker applied in an energy storage combiner cabinet as described in claim 5, characterized in that, It also includes a first fuse, a second fuse, and a third fuse; The first fuse is connected between the contacts of the first circuit breaker and the first input terminal of the voltage detection module; the second fuse is connected between the contacts of the second circuit breaker and the second input terminal of the voltage detection module; and the third fuse is connected between the contacts of the third circuit breaker and the third input terminal of the voltage detection module. The first fuse, the second fuse, and the third fuse are used to disconnect when the current flowing through them is greater than the protection current.

7. The integrated circuit breaker applied in an energy storage combiner cabinet as described in claim 1, characterized in that, It also includes an alarm module; The alarm module is connected to the control circuit and is used to issue an alarm when the control circuit determines that the power parameters are abnormal.

8. The integrated circuit breaker applied in an energy storage combiner cabinet as described in any one of claims 1-7, characterized in that, The control circuit includes an energy parameter acquisition module and a control module; The input terminal of the power parameter acquisition module is connected to the output terminal of the power detection module, and is used to acquire the power parameters of the circuit between the power grid and the load collected by the power detection module. The input terminal of the control module is connected to the output terminal of the power parameter acquisition module, and is used to transmit the power parameters of the circuit between the power grid and the load collected by the power detection module to the BAU.

9. The integrated circuit breaker applied in an energy storage combiner cabinet as described in claim 8, characterized in that, The control circuit also includes a communication module; the control module is connected to the control terminal of the circuit breaker; the communication module is connected to both the control module and the BAU. The control module transmits the power parameters to the BAU through the communication module, and the BAU transmits the received circuit breaker turn-off command to the control circuit through the communication module, so that the control circuit controls the circuit breaker to turn off when it receives the circuit breaker turn-off command.

10. An energy storage combiner cabinet, characterized in that, Including the integrated circuit breaker used in energy storage combiner cabinets as described in any one of claims 1-9.

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