High-voltage box for energy storage liquid-cooled battery cabinet

Abstract

The utility model discloses a high-voltage box for an energy-storage liquid-cooled battery cabinet. The largest surfaces of a high-voltage box shell are two side surfaces, one side surface is designed to be open, a sealing rubber strip is arranged between the high-voltage box shell and a box cover, the front end of the high-voltage box shell is a front panel, the rear end of the high-voltage box shell is provided with a positioning pin, and electrical elements are arranged in the high-voltage box; the high-voltage box switching power supply and the master controller are mounted at the bottom of the high-voltage box; a circuit breaker mounting plate is mounted on a rear end plate in the high-voltage box; the circuit breaker is mounted on the mounting plate; an adapter plate and an IO expansion board are arranged on the mounting plate; a pre-charging resistor is mounted on the right upper side of the mounting plate; the high-voltage box improves charging and discharging control for the battery pack or the battery cluster, provides power-on control for an external high-voltage part, is responsible for collecting voltage, current and temperature information of batteries in the battery pack or the battery cluster, packaging and uploading the information, achieves the functions of battery overload short-circuit protection, high-voltage sampling, low-voltage control and the like, and protects and monitors operation of a high-voltage system.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage batteries and battery management, and in particular to a high-voltage box for an energy storage liquid-cooled battery cabinet. Background Art

[0002] In current technology, the functional unit of the high-voltage box is not compatible enough with electrical devices; the existing high-voltage box has insufficient protection level, and the life of the device is easily affected by the environment; the components are installed on one side of the high-voltage box, the heat generated by the device flows inside the high-voltage box, and the heat exchange is slow. During long-term operation, the high-voltage box will have insufficient heat dissipation capacity, affecting the performance of the components.

[0003] At present, the layout of internal components of the high-voltage box is unreasonable, the space utilization rate is low, resulting in space waste, low heat exchange efficiency, poor heat dissipation function, and no waterproof and dustproof function, so the failure rate is high.

[0004] The high-voltage box is the management unit of the energy storage battery pack or battery cluster, which improves the charge and discharge control of the battery pack or battery cluster, provides power-on control for external high-voltage components, and is responsible for collecting the voltage, current, temperature and other information of the batteries in the battery pack or battery cluster and uploading them in a package, realizing functions such as battery overload short circuit protection, high-voltage sampling, and low-voltage control, and protecting and monitoring the operation of the high-voltage system. The advantages of electric energy are obvious, clean and efficient, and there are more and more means to obtain electric energy. Utility Model Content

[0005] The purpose of the utility model is to propose a high-voltage box structure for a compatible battery cabinet with a reasonable layout. The high-voltage box is designed for an energy storage battery cabinet. The lateral size of the high-voltage box is designed according to the battery cabinet, and the battery cabinet space is used reasonably. The structure is reasonable and the layout is compact. It meets the IP65 protection requirements, is easy to install and maintain, and is compatible with various electrical components such as circuit breakers, fuses, relays, and main controls.

[0006] In order to achieve the purpose of the high-voltage box, the utility model provides a compatible high-voltage box structure, and the specific technical solution is:

[0007] A high-voltage box for an energy storage liquid-cooled battery cabinet, comprising a high-voltage box shell, a box cover, a mounting plate, a sealing strip, a switching power supply, a main control, a switching power supply mounting plate, an IO expansion board, an IO expansion board mounting plate, a molded case circuit breaker, a circuit breaker mounting plate, an adapter plate, a surge protector, a surge protection fuse, a surge protector mounting plate, a bypass fan, a relay, a fuse, a pre-charging resistor, a Hall or shunt, a fire aerosol, a copper bus, an insulator, a communication terminal, an indicator light, a high-voltage and low-voltage terminal block, an air switch window, a handle and other components, grounding, and a positioning pin. The two sides of the high-voltage box shell are the largest surfaces, one of which is open, and this surface is fixed to the high-voltage box shell by a box cover folded up on all sides, and there is a sealing strip between the high-voltage box shell and the box cover, and the front end of the high-voltage box shell is a front panel, on which communication terminals, high-voltage and low-voltage terminals, indicator lights, air switch windows are installed, and the front panel is provided with a grounding wire connection; a positioning pin is provided at the rear end of the high-voltage box shell for connecting and positioning the rear end with the battery cabinet; electrical components are arranged and installed inside the high-voltage box; the high-voltage box switch power supply and main control are installed at the bottom of the high-voltage box; a device mounting plate is installed on the rear end panel inside the high-voltage box; the circuit breaker inside the high-voltage box is installed on the mounting plate; a transfer plate is provided on the high-voltage box mounting plate; an IO expansion board mounting plate is provided on the lower right side of the high-voltage box circuit breaker mounting plate; a pre-charging resistor is installed on the upper right side of the high-voltage box circuit breaker mounting plate; the box body, devices, copper busbars, insulators, and communication terminals in the high-voltage box form an integrated system to realize the functions of the high-voltage box.

[0008] The circuit breaker mounting plate inside the high-voltage box is designed to be compatible, and a handle is provided on the front end of the high-voltage box shell, and a mounting positioning hole connected to the battery cabinet is provided.

[0009] The high-voltage box circuit breaker mounting plate and the adapter plate cooperate to install circuit breakers of other models and specifications.

[0010] A pre-charging resistor is installed on the upper right side of the high-voltage box mounting plate.

[0011] The left side plate of the high voltage box is provided with a device mounting plate.

[0012] The left side plate of the high-voltage box is provided with a device mounting plate for mounting electrical devices.

[0013] The surge protector, the surge protector fuse, the surge protector mounting plate, the first relay, the second relay, the first fuse, the second fuse, the Hall or shunt, the spoiler fan, the grounding copper busbar and other devices are installed on the mounting plate on the left side of the high-voltage box.

[0014] The components mounted on the component mounting plate on the left side of the high-voltage box are connected via copper bars.

[0015] The high-voltage box copper bar is used to install components of different specifications on the mounting plate.

[0016] A switch power supply mounting plate is provided at the bottom of the high voltage box, on which a switch power supply and a main control can be mounted.

[0017] In the utility model, the box body, devices, copper busbars, insulators, communication terminals and other accessories are installed through layout design to form an integrated system to realize the function of the high-voltage box, reasonably use the battery cabinet space, have a reasonable structure, and a compact layout to meet the IP65 protection requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the high voltage box in three dimensions;

[0019] Figure 2 Schematic diagram of the main view of the high voltage box;

[0020] Figure 3 Schematic diagram of the side view of the high voltage box;

[0021] Figure 4 Schematic diagram of the top view of the high voltage box;

[0022] Figure 5 Schematic diagram of the front panel of the high voltage box;

[0023] Figure 6 Schematic diagram of the internal device layout of the high-voltage box;

[0024] Figure 7 Schematic diagram of high voltage box body;

[0025] Figure 8 Schematic diagram of the high voltage box switch power supply installation board;

[0026] Fig. 9 Schematic diagram of the installation board of the high-voltage box IO expansion board;

[0027] Fig.10 Schematic diagram of the high voltage box circuit breaker mounting plate;

[0028] Fig.11 Schematic diagram of high voltage box circuit breaker adapter plate.

[0029] High-voltage box housing 1, box cover 2, device mounting plate 3, sealing strip 4, switching power supply 5, main control 6, switching power supply mounting plate 7, IO expansion board 8, IO expansion board mounting plate 9, molded case circuit breaker 10, circuit breaker mounting plate 11, adapter plate 12, surge protector 13, surge protection fuse 14, surge protector mounting plate 15, bypass fan 16, first relay 17, second relay (17-1), first fuse 18, second fuse 18-1, pre-charging resistor 19, Hall or shunt 20, fire aerosol 21, copper bus 22, insulator 23, communication terminal 24, indicator light 25, high-voltage and low-voltage wiring terminals 26, air switch window 28, handle 29, grounding 30, positioning pin 31. DETAILED DESCRIPTION

[0030] The following will combine the drawings in the embodiment of the high-voltage box of the utility model to clearly and completely describe the technical solutions in the embodiment of the high-voltage box of the utility model. Obviously, the embodiment of the high-voltage box described is only a part of the embodiment of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the utility model. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model. In the utility model, unless otherwise specified, the directional words used, such as "upper" and "lower", refer to the upper and lower parts of the device in actual use or working state; "front" and "back" refer to the front and back parts of the device in actual use or working state, specifically the drawing direction in the drawings; "left side" and "right side" refer to the left and right sides of the device in actual use or working state; "side" refers to the side of the device in actual use or working state; "inside" and "outside" refer to the inside and outside of the box body divided by the box body sheet metal shell in the actual use or working state of the device, which is for the outline of the device:

[0031] Reference Figure 1-Figure 6 As shown, the largest surfaces of the high-voltage box shell are the two side surfaces, and one side is open. This surface is fixed to the high-voltage box shell by a box cover folded up on all sides. There is a sealing strip between the high-voltage box shell and the box cover. The front end of the high-voltage box shell is a front panel, and the front panel is equipped with communication terminals, high-voltage and low-voltage terminals, indicator lights, air switch windows, and a grounding wire connection; a positioning pin is provided at the rear end of the high-voltage box shell for connecting and positioning the rear end with the battery cabinet; electrical components are arranged and installed inside the high-voltage box; the high-voltage box switch power supply and the main control are installed at the bottom of the high-voltage box; a circuit breaker mounting plate is installed on the rear end panel inside the high-voltage box; the circuit breaker inside the high-voltage box is installed on the mounting plate; an adapter plate is provided on the high-voltage box mounting plate; an IO expansion board mounting plate is provided on the lower right side of the high-voltage box circuit breaker mounting plate; a pre-charging resistor is installed on the upper right side of the high-voltage box circuit breaker mounting plate; the box body, devices, copper busbars, insulators, and communication terminals in the high-voltage box form an integrated system to realize the functions of the high-voltage box.

[0032] Reference Figure 7 As shown, a pre-charging resistor is installed on the upper right side of the high-voltage box mounting plate, a circuit breaker mounting plate is provided on the left side plate of the high-voltage box, and a mounting plate is provided on the left side plate of the high-voltage box to install electrical components.

[0033] Reference Figure 8-Figure 11As shown, electrical devices are installed on the device mounting plate on the left side of the high-voltage box. Surge protector, surge protector fuse, surge protector mounting plate, relay (including first and second relays), fuse (including first and second fuse), Hall or shunt, spoiler fan, grounding copper busbar and other devices are installed on the mounting plate on the left side of the high-voltage box. Devices installed on the mounting plate on the left side of the high-voltage box are connected through copper busbars. Devices of different specifications are installed on the copper busbar of the high-voltage box. There is a switching power supply mounting plate at the bottom of the high-voltage box, which can be used to install the switching power supply and main control.

[0034] In the energy storage system, the high-voltage box has the functions of controlling, protecting, monitoring and rectifying the system, and is the core component of the energy storage system. During the charging and discharging process, the current on the battery side is input and output by B+ and B-, and the current on the PCS side is input and output by PCS+ and PCS-. In this process, the high-voltage box can charge and discharge it to different degrees according to the needs of the energy storage system through charging and discharging control. During the long-term storage of the energy storage system, the energy storage high-voltage control box can keep the voltage and current of the energy storage system stable at any time. At the same time, the high-voltage box can monitor the energy storage system. When the energy storage system fails, the energy storage high-voltage control box can immediately take corresponding protection measures to prevent the continued development of the fault, thereby avoiding the occurrence of accidents. The energy storage high-voltage control box can monitor the temperature, voltage, current and other parameters of the energy storage system. When these parameters exceed the set threshold, the high-voltage box will automatically start the protection mechanism. The high-voltage box can monitor the operating status of the energy storage system in real time, including current, voltage, temperature and other parameters, realize real-time monitoring and data collection of the operation of the energy storage system, and provide a basis for the analysis and data adjustment of the energy storage system.

[0035] An intermediate transition device responsible for the conversion and storage of electric energy inside the energy storage battery. Specifically, the high-voltage box can convert electric energy from low voltage (DC) to high voltage (DC or AC). When the battery is charged, the electric energy is input from the PCS (+ / -) terminal, passes through the copper bus, circuit breaker 10, relay 18, fuse 17, and is output from the battery side B (+ / -) to charge the battery. In this process, the switching power supply 5 provides power to the components in the high-voltage box, the main control 6 receives the battery charging data, the IO expansion board 8 performs data conversion, the fuse 17, the pre-charge resistor 19, the circuit breaker 10, the relay 18, and the Hall 20 are responsible for circuit protection, on-off and monitoring functions; when the battery is discharged, the electric energy is input from the B (+ / -) terminal, passes through the copper bus, circuit breaker 10, relay 18, fuse 17, and is output from the battery side PCS (+ / -), and the battery is discharged. In this process, the role of each component is the same as charging. Therefore, the high-voltage box shown has both the function of monitoring the data of the battery cell, battery pack and circuit and the function of circuit protection, ensuring that the voltage, current and other parameters inside the high-voltage box are within the safe range and achieve good radiation, toughness and insulation performance. At the same time, when using the high-voltage box, it is necessary to comply with the corresponding electrical safety regulations to ensure personal safety and stable operation of the equipment. In order to better store in the energy storage container and be able to release when needed, to provide support for the stable operation of the energy storage system.

Claims

1. A high-voltage box for an energy storage liquid-cooled battery cabinet, comprising a high-voltage box housing (1), a box cover (2), a sealing strip (4), a switching power supply (5), a main control (6), an IO expansion board (8), an IO expansion board mounting plate (9), a molded case circuit breaker (10), a circuit breaker mounting plate (11), and an adapter plate (12), characterized in that: The two sides of the high-voltage box shell (1) are the largest surfaces, one of which is open. A sealing strip (4) is provided between the high-voltage box shell (1) and the box cover (2). The front end of the high-voltage box shell (1) is a front panel, on which a communication terminal (24), an indicator light (25), high-voltage and low-voltage terminals (26) are installed, and the front panel is provided with a grounding connection point; a positioning pin (31) is provided at the rear end of the high-voltage box shell (1) for connecting and positioning the rear end with the battery cabinet; electrical components are arranged and installed inside the high-voltage box; a switching power supply (5) and a main control (6) are installed at the bottom of the high-voltage box; a circuit breaker mounting plate (11) is installed on the rear end panel inside the high-voltage box; a molded case circuit breaker (10) inside the high-voltage box is installed on the circuit breaker mounting plate (11); an adapter plate (12) is provided on the circuit breaker mounting plate (11); an IO expansion board (8) is installed on the IO expansion board mounting plate (9) of the circuit breaker mounting plate (11); and a pre-charging resistor (19) is installed on the upper right side of the circuit breaker mounting plate (11).

2. The high-voltage box for an energy storage liquid-cooled battery cabinet according to claim 1, characterized in that: A handle (29) is provided on the front end of the high-voltage box housing (1), and a mounting positioning hole is provided on the high-voltage box housing (1).

3. The high-voltage box for an energy storage liquid-cooled battery cabinet according to claim 1, characterized in that: The circuit breaker mounting plate (11) and the adapter plate (12) are connected.

4. The high-voltage box for an energy storage liquid-cooled battery cabinet according to claim 1, characterized in that: A device mounting plate (3) is provided on the high-voltage box housing (1).

5. The high-voltage box for an energy storage liquid-cooled battery cabinet according to claim 4, characterized in that: The left side plate of the high-voltage box housing (1) is provided with a device mounting plate (3) for mounting electrical devices.

6. The high-voltage box for an energy storage liquid-cooled battery cabinet according to claim 1, characterized in that: A surge protector (13), a surge protector fuse (14), a surge protector mounting plate (15), a first relay (17), a second relay (17-1), a first fuse (18), a second fuse (18-1), a Hall or shunt (20), a turbulent fan (16) and a grounding copper busbar device are installed on the device mounting plate (3) on the left side of the high-voltage box.

7. The high-voltage box for an energy storage liquid-cooled battery cabinet according to claim 1, characterized in that: The components installed on the component mounting plate (3) on the left side of the high-voltage box housing (1) are connected via a copper busbar (22).

8. The high-voltage box for an energy storage liquid-cooled battery cabinet according to claim 7, characterized in that: Devices of different specifications are installed on the device mounting plate (3).

9. The high-voltage box for an energy storage liquid-cooled battery cabinet according to claim 1, characterized in that: A switching power supply mounting plate (7) is provided at the bottom of the high-voltage box for mounting the switching power supply (5) and the main control (6).

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