A PCS energy storage inverter cabinet

Abstract

This invention discloses a PCS energy storage inverter cabinet, comprising: a cabinet body, an arc-extinguishing circuit breaker, a PCS inverter assembly, and an input busbar assembly and an output busbar assembly fixed inside the cabinet body. A first electrode and a second electrode are fixedly installed on the inner side of the cabinet body, located at both ends of the arc-extinguishing circuit breaker and electrically connected to both ends of the circuit breaker, respectively. Both ends of the PCS inverter assembly are electrically connected to the second electrode and the ends of the output busbar assembly, respectively. The input busbar assembly includes: a first busbar assembly and, sequentially connected to it, an electrical isolation device, an overcurrent protector, and a filter module. In this invention, by setting an arc-extinguishing circuit breaker structure, the contact head and electrode ears deflect under the mechanical pressing action of the circuit pressure rod to engage the electrodes, improving the closing and opening speed and establishing an effective and stable connection. That is, the distance between the contacts increases significantly within the same time frame, and the electric field strength decreases, which helps to establish a strong arc-extinguishing capability in a shorter time.

Description

Technical Field

[0001] This invention relates to the field of inverter cabinet technology, specifically a PCS energy storage inverter cabinet. Background Technology

[0002] Against the backdrop of rapid development of renewable energy and the construction of smart grids, power conversion systems (PCS) play a crucial role as an important component of energy storage systems. Also known as bidirectional energy storage inverters, PCS are the core components that enable bidirectional flow of electrical energy between the energy storage system and the grid. They are primarily responsible for controlling the charging and discharging processes of the batteries and performing AC / DC conversion.

[0003] However, existing PCS energy storage inverter cabinets still have many shortcomings in design and functionality. First, traditional cabinets typically use mechanical switches or electromagnetic relays for circuit breaking, which have slow response times and are prone to arcing, affecting equipment safety and potentially shortening its lifespan. Second, the lack of electrical isolation devices makes the inverter's internal circuits susceptible to high voltage and current surges from the grid, increasing the risk of equipment damage. Furthermore, the overcurrent protection devices in existing cabinets are not sensitive enough and may fail to disconnect the circuit in time, leading to equipment damage due to overcurrent. Simultaneously, the filtering modules have limited capabilities and cannot effectively filter out noise and harmonics from the grid, affecting current stability. More importantly, the monitoring and early warning functions of existing cabinets are relatively weak, lacking real-time monitoring and intelligent alarm mechanisms, making it difficult to promptly detect and respond to potential electrical faults or arcing risks.

[0004] In view of this, we have studied and improved the existing problems and provided a PCS energy storage inverter cabinet to solve the current problems. The aim is to solve the problems and improve the practical value through this technology. Summary of the Invention

[0005] The present invention aims to solve one of the technical problems existing in the prior art or related technologies.

[0006] Therefore, the technical solution adopted by the present invention is as follows: a PCS energy storage inverter cabinet, comprising: a cabinet body, an arc-extinguishing circuit breaker, a PCS inverter assembly, and an input busbar assembly and an output busbar assembly fixed inside the cabinet body. The inner side of the cabinet body is fixedly installed with a first electrode and a second electrode located at both ends of the arc-extinguishing circuit breaker and electrically connected to both ends of the arc-extinguishing circuit breaker, respectively. The two ends of the PCS inverter assembly are electrically connected to the second electrode and the end of the output busbar assembly, respectively. The input busbar assembly includes: a first busbar assembly and an electrical isolation device, an overcurrent protector, and a filter module connected thereto in sequence. The output busbar assembly includes a second busbar assembly, a shielding housing assembly fixed to the surface of the second busbar assembly, and a monitoring module and a data processing unit located inside the shielding housing assembly. The output end of the data processing unit is electrically connected to an alarm system. The arc-extinguishing circuit breaker includes an insulating base, a pass pressure rod, a break pressure rod, a knee electrode, and an electrode lug rotatably mounted on the surface of the insulating base. An output electrode, an input electrode, and a knee electrode are fixedly mounted on the surface of the insulating base, with the output and input electrodes located at opposite ends of the insulating base and arranged opposite to the electrode lug and knee electrode, respectively. The pass pressure rod and the break pressure rod are parallel to each other and perpendicular to the surface of the insulating base. The knee electrode is rotatably mounted on the surface of the insulating base and has a crimp connector on one side opposite to the surface of the knee electrode. A first connecting rod and a second connecting rod are rotatably connected between the electrode lug and the knee electrode. A pressure guide seat is provided on the surface of the pass pressure rod. A pivot pin is provided at one end of the first and second connecting rods and is rotatably connected to each other, with the pivot pin slidably sleeved inside the pressure guide seat. A column spring is movably sleeved on the surface of the pass pressure rod. A tension spring connected to the surface of the knee electrode is provided on the surface of the insulating base. A wedge pin is provided on the surface of the break pressure rod for abutting against the surface of the electrode lug.

[0007] In a preferred embodiment, the present invention can be further configured as follows: the first busbar and the electrical isolation device connected thereto are disposed at the current input terminal to electrically isolate the high voltage and high current on the grid side from the internal circuit of the inverter, thereby improving system safety; an overcurrent protector is directly connected after the electrical isolation device to detect the current passing through the electrical isolation device and automatically cut off the circuit when the current exceeds a preset safety value to prevent damage to the inverter and subsequent equipment due to overcurrent; a filter module is disposed after the overcurrent protector to filter out noise and harmonics in the grid, ensuring that the current input to the inverter is pure and stable, thereby improving the operating efficiency and stability of the inverter. The electrical isolation device effectively isolates the high voltage and high current on the grid side, reducing the risk of the internal circuit of the inverter being directly impacted by grid fluctuations or faults. Stable current input also helps to improve the stability and reliability of the entire energy storage system, extend the service life of the equipment, and ultimately improve the overall user satisfaction and trust in the PCS energy storage inverter cabinet and the energy storage system it belongs to by improving the system's safety, stability, and maintainability.

[0008] In a preferred embodiment, the present invention can be further configured as follows: the second busbar assembly and the shielding can assembly fixed to the surface of the second busbar assembly: for packaging and shielding external electromagnetic interference to the internal components; Monitoring module: Fixed inside the shielded tank assembly for real-time monitoring of electrical parameters of the busbar and its connections, including but not limited to current, voltage, temperature and potential arcing activity. It has input and output terminals at both ends for connection to the second electrode and the output busbar assembly, respectively. Data processing unit: Connected to the monitoring module, it receives data transmitted by the monitoring module, processes and analyzes the data to identify abnormal patterns (such as sudden changes in current or voltage, rapid rise in temperature, etc.), and determines whether there is a risk of electrical fault or electric arc. Alarm system: Integrated into or connected to the data processing unit, when the data processing unit detects an abnormal situation, it can immediately trigger the alarm mechanism and issue an audible and visual alarm signal to remind the operator to pay attention and take appropriate measures.

[0009] In a preferred embodiment, the present invention can be further configured such that: the first electrode is used to connect the input electrode and the electrode at the end of the input busbar, and the plate electrode is used to connect the PCS inverter component and the electrode at the end of the output electrode.

[0010] In a preferred embodiment, the present invention can be further configured as follows: during the vertical movement of the pressure rod on the surface of the insulating base, the pressure guide seat drives the first connecting rod and the second connecting rod to deflect synchronously to form a straight line. In the straight state of the first connecting rod and the second connecting rod, the pressure joint abuts against the surface of the kneeling electrode and the electrode ear abuts against the surface of the output electrode. In the straight state of the first connecting rod and the second connecting rod, a force-balanced overall structure is formed to maintain a stable electrical connection effect. When the balance system is broken, the column spring and the tension spring quickly reset and disconnect the state.

[0011] In a preferred embodiment, the present invention can be further configured such that: one end of the knee probe is provided with an arc-shaped elastic contact, and the surface of the elastic contact is in frictional contact with the surface of the insulating base, which is used to achieve deflection locking of the knee probe through the abutment effect between the contact and the insulating base. The connection point between the knee probe and the second link and the elastic contact are respectively located at both ends of the connection point between the knee probe and the insulating base. Through the frictional contact between the elastic contact on the surface of the knee probe and the surface of the insulating base, the contact area between the elastic contact and the surface of the insulating base is increased during the deflection of the knee probe, and then the elastic contact locks the movement of the knee probe through the high friction effect after the knee probe deflects.

[0012] In a preferred embodiment, the present invention can be further configured such that: the opposite surfaces of the electrode ear and the output electrode are provided with a wedge surface adapted to the surface of the wedge pin; when the wedge pin is in contact with the surface of the electrode ear, the electrode ear is pushed to deflect towards the knee probe; during the pressing action of the circuit breaker lever, the electrode ear is pushed to deflect by the action of the wedge pin and the wedge surface of the electrode ear, thereby realizing the disconnection of the contact state between the electrode ear and the output electrode.

[0013] In a preferred embodiment, the present invention can be further configured such that the insulating base, the pass pressure bar, and the break pressure bar are insulating material components, and one end of the pass pressure bar and the break pressure bar protrudes from the surface of the cabinet body.

[0014] The beneficial effects achieved by this invention are as follows: 1. In this invention, by setting up an arc-extinguishing circuit breaker structure, the knee contactor and electrode ear deflect and engage the electrode under the mechanical pressing action of the circuit pressure rod, thereby improving the closing and opening speed and establishing an effective and stable connection effect. That is, the distance between the contacts increases significantly in the same amount of time, and the electric field strength decreases, which helps to establish a strong arc-extinguishing capability in a shorter time.

[0015] 2. In this invention, during the arc-extinguishing circuit breaker's circuit connection process, the elastic energy stored by the column spring and tension spring forms a stable system in the connection state of the first and second links. During the circuit breaking control, the force balance system is quickly disrupted by the downward pressure of the circuit breaking lever, thereby achieving rapid disconnection of the circuit connection state. This effectively reduces the damage of electric arc to the equipment, thus extending the service life of the inverter and other related equipment.

[0016] 3. In this invention, by setting up input and output busbar groups to monitor the input and output current and voltage respectively, the high voltage and high current on the grid side are effectively isolated, reducing the risk of the inverter's internal circuits being directly impacted by grid fluctuations or faults. Furthermore, by monitoring abnormal states of the output current or voltage and by monitoring electrical parameters (including current, voltage, temperature, etc.) in real time and processing and analyzing the data, the system can identify the risks of electrical faults or arcing in advance, playing a role in preventive maintenance and further improving safety performance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the cabinet body according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the PCS inverter module installation structure according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the installation structure of an arc-extinguishing circuit breaker according to an embodiment of the present invention; Figure 5 This is a schematic diagram of an arc-extinguishing circuit breaker structure according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the surface structure of an insulating base according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the PCS inverter component structure according to an embodiment of the present invention.

[0018] Figure label: 100. Cabinet body; 110. Monitoring components; 120. Input busbar assembly; 130. Output busbar assembly; 140. First electrode; 150. Second electrode; 200. Arc-extinguishing circuit breaker; 210. Insulating base; 220. Circuit breaker lever; 230. Circuit breaker lever; 240. Knee electrode; 250. Kneeling electrode; 260. Electrode lug; 211. Output electrode; 212. Input electrode; 221. Pressure guide seat; 222. First connecting rod; 223. Second connecting rod; 224. Column spring; 231. Wedge pin; 241. Crimp connector; 242. Tension spring; 300, PCS inverter component; 310, input terminal; 320, output terminal. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0020] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the invention.

[0021] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a PCS energy storage inverter cabinet.

[0022] Combination Figures 1-7 As shown, the present invention provides a PCS energy storage inverter cabinet, comprising: a cabinet body 100, an arc-extinguishing circuit breaker 200, a PCS inverter assembly 300, and an input busbar assembly 120 and an output busbar assembly 130 fixed inside the cabinet body 100. A first electrode 140 and a second electrode 150 are fixedly installed on the inner side of the cabinet body 100, located at both ends of the arc-extinguishing circuit breaker 200 and electrically connected to both ends of the arc-extinguishing circuit breaker 200, respectively. Both ends of the PCS inverter assembly 300 are electrically connected to the ends of the second electrode 150 and the output busbar assembly 130, respectively. The input busbar assembly 120 includes: a first busbar assembly and an electrical isolation device, an overcurrent protector, and a filter module connected thereto in sequence. The output busbar assembly 130 includes a second busbar assembly, a shielding housing assembly fixed to the surface of the second busbar assembly, and a monitoring module and a data processing unit located inside the shielding housing assembly. The output end of the data processing unit is electrically connected to an alarm system. The arc-extinguishing circuit breaker 200 includes an insulating base 210, a pass-through lever 220, a break-through lever 230, a contactor 240, and an electrode lug 260 rotatably mounted on the surface of the insulating base 210. An output electrode 211, an input electrode 212, and a contactor 250 are fixedly mounted on the surface of the insulating base 210. The output electrode 211 and the input electrode 212 are located at opposite ends of the insulating base 210 and are respectively arranged opposite to the electrode lug 260 and the contactor 250. The pass-through lever 220 and the break-through lever 230 are parallel to each other and perpendicular to the surface of the insulating base 210. The contactor 240 is rotatably mounted on the surface of the insulating base 210 and has a contactor 260 on one side. There is a crimp connector 241 opposite to the surface of the knee electrode 250. The electrode ear 260 and the knee electrode head 240 are connected by a first connecting rod 222 and a second connecting rod 223 that are rotatably connected to each other. The surface of the passage pressure rod 220 is provided with a pressure guide seat 221. One end of the first connecting rod 222 and the second connecting rod 223 is provided with a pivot pin and is rotatably connected to each other. The pivot pin is slidably sleeved on the inner side of the pressure guide seat 221. The surface of the passage pressure rod 220 is movably sleeved with a column spring 224. The surface of the insulating base 210 is provided with a tension spring 242 that is connected to the surface of the knee electrode head 240. The surface of the circuit breaking pressure rod 230 is provided with a wedge pin 231 for abutting against the surface of the electrode ear 260.

[0023] In this embodiment, the first busbar and the electrical isolation device connected thereto are disposed at the current input terminal to electrically isolate the high voltage and high current on the grid side from the internal circuit of the inverter, thereby improving the safety of the system. The overcurrent protector, connected directly after the electrical isolation device, detects the current passing through the device and automatically cuts off the circuit when the current exceeds a preset safety value, preventing damage to the inverter and downstream equipment due to overcurrent. The filter module, located after the overcurrent protector, is used to filter out noise and harmonics in the power grid, ensuring that the current input to the inverter is pure and stable, and improving the inverter's operating efficiency and stability.

[0024] Specifically, the electrical isolation device effectively isolates the high voltage and high current on the grid side, reducing the risk of the inverter's internal circuits being directly impacted by grid fluctuations or faults. Stable current input also helps improve the stability and reliability of the entire energy storage system, extending the service life of the equipment. By improving the system's safety, stability, and maintainability, it ultimately enhances users' overall satisfaction and trust in the PCS energy storage inverter cabinet and the energy storage system it belongs to.

[0025] In this embodiment, the second busbar assembly and the shielding can assembly fixed to the surface of the second busbar assembly are used to package and shield external electromagnetic interference to the internal components. Monitoring module: Fixed inside the shielded tank assembly for real-time monitoring of electrical parameters of the busbar and its connections, including but not limited to current, voltage, temperature and potential arcing activity. It has an input terminal 310 and an output terminal 320 at both ends for connection to the second electrode 150 and the output busbar assembly 130, respectively. Data processing unit: Connected to the monitoring module, it receives data transmitted by the monitoring module, processes and analyzes the data to identify abnormal patterns such as sudden changes in current or voltage, sharp rise in temperature, etc., and determines whether there is a risk of electrical fault or electric arc. Alarm system: Integrated into or connected to the data processing unit, when the data processing unit detects an abnormal situation, it can immediately trigger the alarm mechanism and issue an audible and visual alarm signal to remind the operator to pay attention and take appropriate measures.

[0026] Specifically, the output busbar group 130 system effectively improves the safety and reliability of the electrical system through mechanisms such as shielding external electromagnetic interference, real-time monitoring of electrical parameters, data processing and analysis, and timely alarm response.

[0027] In this embodiment, the first electrode 140 is used to connect the input electrode 212 to the electrode at the end of the input busbar group 120, and the plate electrode 250 is used to connect the PCS inverter assembly 300 to the electrode at the end of the output electrode 211.

[0028] Furthermore, during the vertical movement of the pressure rod 220 towards the surface of the insulating base 210, the pressure guide 221 drives the first connecting rod 222 and the second connecting rod 223 to deflect synchronously to form a straight line. In the straight state of the first connecting rod 222 and the second connecting rod 223, the pressure connector 241 abuts against the surface of the kneeling electrode 250 and the electrode ear 260 abuts against the surface of the output electrode 211.

[0029] Specifically, in the straight state of the first link 222 and the second link 223, a force-balanced overall structure is formed to maintain a stable electrical connection effect, and at the moment the balance system is broken, the column spring 224 and the tension spring 242 quickly reset and disconnect the state.

[0030] In this embodiment, one end of the knee contactor 240 is provided with an arc-shaped elastic contact, and the surface of the elastic contact is in frictional contact with the surface of the insulating base 210. This is used to achieve deflection locking of the knee contactor 240 through the contact effect between the contact and the insulating base 210. The connection point between the knee contactor 240 and the second link 223 and the elastic contact are located at both ends of the connection point between the knee contactor 240 and the insulating base 210, respectively.

[0031] Specifically, through the frictional contact between the elastic contact on the surface of the knee probe 240 and the surface of the insulating base 210, the contact area between the elastic contact and the surface of the insulating base 210 is increased during the deflection of the knee probe 240. As a result, the elastic contact locks the movement of the knee probe 240 after the knee probe 240 deflects due to the high friction effect.

[0032] In this embodiment, the opposing surfaces of the electrode ear 260 and the output electrode 211 are provided with a wedge surface adapted to the surface of the wedge pin 231, which pushes the electrode ear 260 to deflect toward the knee probe 240 when the wedge pin 231 is in contact with the surface of the electrode ear 260.

[0033] Specifically, during the downward pressing action of the circuit breaker lever 230, the electrode ear 260 is deflected by the wedge pin 231 and the wedge surface of the electrode ear 260, thereby breaking the contact state between the electrode ear 260 and the output electrode 211.

[0034] In this embodiment, the insulating base 210, the passage pressure bar 220, and the circuit breaking pressure bar 230 are insulating material components, and one end of the passage pressure bar 220 and the circuit breaking pressure bar 230 protrudes from the surface of the cabinet body 100.

[0035] Working principle and usage process of this invention: With the PCS energy storage inverter cabinet circuit connected, solar power devices are connected through the input busbar 120, and the end of the output busbar 130 is connected to the energy storage system or the load. In the energy storage system, when power needs to be supplied to the grid or the load, the DC power in the energy storage device, such as the battery, is converted into AC power by the PCS inverter component 300. In some application scenarios, such as charging or storing energy storage devices, the PCS inverter component 300 converts the AC power from the grid or other AC power sources into DC power. To ensure the safe operation of the system, the input power supply group 120 system uses an electrical isolation device to achieve electrical isolation between the power grid and the internal circuits of the inverter, improving system safety; an overcurrent protector prevents current overload and protects the equipment from damage; and a filter module filters out grid noise and harmonics, improving power quality. These three components work together to ensure the safe, stable, and efficient operation of the PCS energy storage inverter cabinet and its associated energy storage system. The output power supply group 130 system effectively improves the safety and reliability of the electrical system through mechanisms such as shielding against external electromagnetic interference, real-time monitoring of electrical parameters, data processing and analysis, and timely alarm response. Under the control of the arc-extinguishing circuit breaker 200, the passage lever 220 is manually pressed, which drives the first link 222 and the second link 223 to deflect synchronously through the pressure guide seat 221. This causes the first link 222 and the second link 223 to gradually approach the same straight line, and drives the electrode ear 260 and the knee electrode head 240 to deflect. This causes the pressure connector 241 to press against the surface of the knee electrode 250, connecting the current between the input electrode 212, the knee electrode 250, and the knee electrode head 240. The electrode ear 260 contacts the surface of the output electrode 211, allowing current to flow. At the same time, the column spring 224 and the tension spring 242 complete energy storage. The knee electrode head 240 and the electrode ear 260 transmit force through the first link 222 and the second link 223 on the same straight line and cancel each other out. A stable state is formed, maintaining the circuit connection. Under the pressing operation of the circuit breaker lever 230, the deflection drive of the electrode ear 260 is achieved through the movement of the wedge pin 231, thereby breaking the linear state of the first link 222 and the second link 223. Under the elastic recovery of the tension spring 242 and the column spring 224, the first link 222, the second link 223 and the knee electrode 240 are quickly pulled to deflect and disconnect the circuit. The knee electrode 240 and the electrode ear 260 deflect under the mechanical pressing action of the circuit breaker lever 220 to engage the electrode, improving the closing and opening speed and establishing an effective and stable connection effect. That is, the distance between the contacts increases significantly in the same amount of time, the electric field strength decreases, and it helps to establish a strong arc extinguishing capability in a shorter time.

[0036] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A PCS energy storage inverter cabinet, characterized in that, include: The cabinet body (100), the arc-extinguishing circuit breaker (200), and the PCS inverter assembly (300), as well as the input busbar assembly (120) and the output busbar assembly (130) fixed inside the cabinet body (100), wherein the cabinet body (100) has a first electrode (140) and a second electrode (150) located at both ends of the arc-extinguishing circuit breaker (200) and electrically connected to both ends of the arc-extinguishing circuit breaker (200) respectively, and both ends of the PCS inverter assembly (300) are electrically connected to the second electrode (150) and the end of the output busbar assembly (130) respectively; The input busbar group (120) includes: a first busbar group and an electrical isolation device, an overcurrent protector, and a filter module connected thereto in sequence; the output busbar group (130) includes a second busbar group and a shielding tank assembly fixed to the surface of the second busbar group, as well as a monitoring module and a data processing unit located inside the shielding tank assembly; the output end of the data processing unit is electrically connected to an alarm system. The arc-extinguishing circuit breaker (200) includes an insulating base (210), a pass pressure bar (220), a break pressure bar (230), a knee electrode (240), and an electrode lug (260) rotatably mounted on the surface of the insulating base (210). The surface of the insulating base (210) is fixedly mounted with an output electrode (211), an input electrode (212), and a knee electrode (250). The output electrode (211) and the input electrode (212) are located at both ends of the insulating base (210) and are arranged opposite to the electrode lug (260) and the knee electrode (250), respectively.

2. The PCS energy storage inverter cabinet according to claim 1, characterized in that, The passage pressure bar (220) and the circuit breaking pressure bar (230) are arranged parallel to each other and perpendicular to the surface of the insulating base (210). The knee electrode (240) is rotatably mounted on the surface of the insulating base (210) and has a crimp connector (241) on one side opposite to the surface of the knee electrode (250).

3. The PCS energy storage inverter cabinet according to claim 1, characterized in that, The electrode ear (260) and the knee probe (240) are connected by a first connecting rod (222) and a second connecting rod (223) that are rotatably connected to each other. The surface of the passage pressure rod (220) is provided with a pressure guide seat (221). One end of the first connecting rod (222) and the second connecting rod (223) is provided with a pivot pin and is rotatably connected to each other. The pivot pin is slidably sleeved on the inner side of the pressure guide seat (221). A column spring (224) is movably sleeved on the surface of the passage pressure rod (220). The surface of the insulating base (210) is provided with a tension spring (242) that is connected to the surface of the knee probe (240). The surface of the circuit breaking pressure rod (230) is provided with a wedge pin (231) for abutting against the surface of the electrode ear (260).

4. The PCS energy storage inverter cabinet according to claim 1, characterized in that, The first busbar and the electrical isolation device connected thereto are located at the current input end to electrically isolate the high voltage and high current on the grid side from the internal circuit of the inverter, thereby improving the safety of the system. The overcurrent protector, connected directly after the electrical isolation device, detects the current passing through the device and automatically cuts off the circuit when the current exceeds a preset safety value, preventing damage to the inverter and downstream equipment due to overcurrent. The filter module, located after the overcurrent protector, is used to filter out noise and harmonics in the power grid, ensuring that the current input to the inverter is pure and stable, and improving the inverter's operating efficiency and stability.

5. A PCS energy storage inverter cabinet according to claim 1, characterized in that, The second busbar assembly and the shielding can assembly fixed to the surface of the second busbar assembly are used to package and shield external electromagnetic interference to the internal components. Monitoring module: Fixed inside the shielded tank assembly for real-time monitoring of electrical parameters of the busbar and its connections, including but not limited to current, voltage, temperature and potential arcing activity. It has an input terminal (310) and an output terminal (320) at both ends for connection to the second electrode (150) and the output busbar assembly (130), respectively. Data processing unit: Connected to the monitoring module, it receives data transmitted by the monitoring module, processes and analyzes the data to identify abnormal patterns and determine whether there is a risk of electrical faults or electric arcs. Alarm system: Integrated into or connected to the data processing unit, when the data processing unit detects an abnormal situation, it can immediately trigger the alarm mechanism and issue an audible and visual alarm signal to remind the operator to pay attention and take appropriate measures.

6. A PCS energy storage inverter cabinet according to claim 1, characterized in that, The first electrode (140) is used to connect the input electrode (212) to the electrode at the end of the input busbar (120), and the knee electrode (250) is used to connect the PCS inverter assembly (300) to the electrode at the end of the output electrode (211).

7. A PCS energy storage inverter cabinet according to claim 1, characterized in that, During the movement of the pressure rod (220) perpendicular to the surface of the insulating base (210), the pressure guide (221) drives the first connecting rod (222) and the second connecting rod (223) to deflect synchronously to form a straight line. In the straight state of the first connecting rod (222) and the second connecting rod (223), the pressure connector (241) abuts against the surface of the kneeling electrode (250) and the electrode ear (260) abuts against the surface of the output electrode (211).

8. A PCS energy storage inverter cabinet according to claim 1, characterized in that, One end of the knee contactor (240) is provided with an arc-shaped elastic contact, and the surface of the elastic contact is in frictional contact with the surface of the insulating base (210) to achieve deflection locking of the knee contactor (240) through the contact effect between the contact and (21). The connection point between the knee contactor (240) and the second link (223) and the elastic contact are located at both ends of the connection point between the knee contactor (240) and the insulating base (210).

9. A PCS energy storage inverter cabinet according to claim 1, characterized in that, The electrode ear (260) and the output electrode (211) have a wedge surface on their opposite surfaces to be adapted to the surface of the wedge pin (231). When the wedge pin (231) is in contact with the surface of the electrode ear (260), the electrode ear (260) is pushed to deflect towards the knee probe (240).

10. A PCS energy storage inverter cabinet according to claim 1, characterized in that, The insulating base (210), the passage pressure bar (220) and the circuit breaking pressure bar (230) are insulating material components, and one end of the passage pressure bar (220) and the circuit breaking pressure bar (230) protrudes from the surface of the cabinet body (100).

Images