High-voltage direct-hanging energy storage PCS structure

Abstract

The utility model provides a high-voltage direct-hanging energy storage PCS structure, which belongs to the technical field of high-voltage energy storage products and comprises an energy storage body, a cover plate is arranged on the upper side of the energy storage body, a panel is mounted at the front end of the energy storage body, an exhaust structure is mounted on the panel, a handle is fixedly connected onto the panel, and the handle is fixedly connected with the energy storage body. The lower end face of the energy storage body is detachably connected with a mounting box through screws, a cooling structure is arranged in the mounting box, and damping structures are arranged on the two sides of the mounting box. By means of the cooling structure, efficient refrigeration is achieved, the interior of the high-pressure direct-hanging energy storage PCS structure is rapidly cooled, the problem that the aging speed of parts is increased due to high temperature is solved, the service life is prolonged, and the problem that in the prior art, the heat dissipation performance is poor is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage energy storage products, and more specifically, to a high-voltage direct-connected energy storage PCS structure. Background Technique

[0002] High-voltage direct-connected energy storage, as the name implies, is a high-voltage energy storage system that can be directly connected to the grid. Compared with a low-voltage energy storage system, it has a closer electrical distance to the grid, better voltage support effect during the transient process, eliminates the power frequency transformer, reduces investment and losses, can simulate the four-quadrant operation of a generator set, provides active support and reactive power regulation at the same time, has a stronger ability to support the grid, and improves the safety and stability of the system. The high-voltage direct-connected PCS (high-voltage direct-connected energy storage converter) is one of the core components of a high-voltage energy storage system.

[0003] After retrieval, in the prior art, the patent with the patent application number CN202321383195.3 discloses a high-voltage direct-connected energy storage PCS structure, including a detachable housing and a cover plate. A plurality of film capacitors, a plurality of air duct partitions parallel to the side plates, a charging resistor and a charging contactor are fixedly installed on the bottom plate. A radiator is jointly arranged in a partial area at the top of all the air duct partitions, and an inverter mechanical bypass contactor is fixedly embedded in the area of the air duct partition at the top that is not connected to the radiator; an IGBT component is fixedly connected to the upper surface of the radiator, a capacitor laminated busbar is fixedly arranged on the upper surface of the film capacitor, and a DC mechanical bypass contactor and a second connection row group are fixedly connected to the first mounting plate; a discharge resistor and a switching power supply are fixedly connected to the upper surface of the switching power supply mounting plate; a control board and a drive board for controlling and monitoring the IGBT component are fixedly installed on the control mounting plate. This utility model makes the PCS structure more lightweight, but still has the following defects:

[0004] (1) In the prior art, the heat dissipation effect of the high-voltage direct-connected energy storage PCS structure is not good, and the heat inside it is difficult to effectively reduce, resulting in an accelerated aging rate of its internal components and a reduced service life;

[0005] (2) The shock absorption effect of the high-voltage direct-connected energy storage PCS structure in the prior art is poor, and the internal components are prone to resonance when affected by external vibrations, easily leading to loosening of the internal components.

[0006] Therefore, we make improvements and propose a high-voltage direct-connected energy storage PCS structure. Content of the Utility Model

[0007] The purpose of the present utility model is to address the problems of poor heat dissipation performance and shock absorption performance of the existing high-voltage direct-connected energy storage PCS structure.

[0008] To achieve the above-mentioned utility model purpose, the present utility model provides the following technical solutions:

[0009] A high-voltage direct-hanging energy storage PCS structure to improve the above problems.

[0010] The present utility model is specifically as follows:

[0011] It includes an energy storage body, a cover plate is provided on the upper side of the energy storage body, a panel is installed at the front end of the energy storage body, an exhaust structure is installed on the panel, a handle is fixedly connected to the panel, the lower end surface of the energy storage body is detachably connected to an installation box by screws, a cooling structure is provided in the installation box, and shock-absorbing structures are provided on both sides of the installation box.

[0012] As a preferred technical solution of the present utility model, the cooling structure includes a liquid storage box provided in the installation box, a refrigeration plate is fixedly connected in the liquid storage box, a group of diversion plates are fixedly connected in a staggered manner on the upper end surface of the refrigeration plate, two semiconductor refrigeration chips are symmetrically and fixedly connected to the lower end surface of the refrigeration plate, a heat dissipation fan is installed at the heat dissipation end of the semiconductor refrigeration chip, a micro pump is fixedly connected in the installation box, the input end of the micro pump is communicated with the liquid storage box through a connecting pipe, the output end of the micro pump is fixedly connected with an output pipe, the end of the output pipe is fixedly connected with a cooling pipe, and the cooling pipe is in contact with the bottom of the energy storage body, and the other end of the cooling pipe is communicated with the liquid storage box through a return pipe.

[0013] As a preferred technical solution of the present utility model, two fixing ears are symmetrically and fixedly connected to the front and rear side walls of the liquid storage box, the fixing ears are detachably connected to fixing columns by screws, and the fixing columns are fixedly connected to the installation box.

[0014] As a preferred technical solution of the present utility model, the shock-absorbing structure includes a group of first mounting heads fixed at both ends of the installation box, second mounting heads are provided below the first mounting heads, assembly heads are provided in both the first mounting heads and the second mounting heads, nuts are threadedly connected to the assembly heads, damping rods are fixedly connected between the adjacent upper and lower assembly heads, springs are sleeved outside the damping rods, the upper and lower ends of the springs are respectively fixedly connected to the assembly heads, and the bottom end of the second mounting head is fixedly connected to a bottom plate.

[0015] As a preferred technical solution of the present utility model, a rubber pad is fixedly connected to the lower end surface of the bottom plate, and anti-slip lines are provided on the bottom surface of the rubber pad.

[0016] As a preferred technical solution of the present utility model, a group of heat dissipation holes are opened on both the left and right side walls of the installation box.

[0017] Compared with the prior art, the beneficial effects of the present utility model:

[0018] In the solution of the present utility model:

[0019] 1. Through the set cooling structure, efficient refrigeration is achieved, and the inside of the high-voltage direct-connected energy storage PCS structure is quickly cooled, avoiding the problem of accelerated aging of parts caused by high temperature, improving the service life, and solving the problem of poor heat dissipation in the prior art;

[0020] 2. Through the set shock-absorbing structure, shock absorption of the high-voltage direct-connected energy storage PCS structure is achieved, avoiding the phenomenon of resonance of internal components in the high-voltage direct-connected energy storage PCS structure caused by external vibration, and avoiding the phenomenon of loosening of internal components, solving the problem of poor shock absorption performance in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure provided by the present utility model;

[0022] Figure 2 It is a schematic diagram of the bottom structure provided by the present utility model;

[0023] Figure 3 It is a schematic diagram of the cooling structure provided by the present utility model;

[0024] Figure 4 It is a schematic diagram of the bottom structure of the cooling structure provided by the present utility model;

[0025] Figure 5 It is a schematic diagram of the internal structure of the liquid storage box provided by the present utility model;

[0026] Figure 6 It is a schematic diagram of the side view structure provided by the present utility model.

[0027] Labels in the figure:

[0028] 1. Energy storage body; 2. Cover plate; 3. Panel; 4. Exhaust structure; 5. Handle; 6. Installation box; 7. Cooling structure; 701. Liquid storage box; 702. Refrigeration plate; 703. Deflector; 704. Semiconductor refrigeration sheet; 705. Cooling fan; 706. Micro pump; 707. Connecting pipe; 708. Output pipe; 709. Cooling pipe; 7010. Return pipe; 7011. Fixed ear; 7012. Fixed column; 8. Shock-absorbing structure; 801. First mounting head; 802. Second mounting head; 803. Assembly head; 804. Nut; 805. Damping rod; 806. Spring; 807. Bottom plate; 808. Rubber pad; 9. Heat dissipation hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model.

[0030] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 shown, this embodiment provides a high-voltage direct-hanging energy storage PCS structure, which includes an energy storage body 1. A cover plate 2 is provided on the upper side of the energy storage body 1. A panel 3 is installed at the front end of the energy storage body 1. An exhaust structure 4 is installed on the panel 3. The internal structure and connection method of the energy storage body 1, the cover plate 2, the panel 3, and the exhaust structure 4 are all prior art and will not be elaborated here. A handle 5 is fixedly connected to the panel 3. The lower end surface of the energy storage body 1 is detachably connected to an installation box 6 by screws. A cooling structure 7 is provided in the installation box 6, which can enhance the cooling effect, efficiently refrigerate to avoid the acceleration of the aging speed of components caused by high temperature. Shock-absorbing structures 8 are provided on both sides of the installation box 6 to effectively absorb shock and avoid resonance of internal components.

[0031] As shown in Figure 3 , Figure 4 and Figure 5 shown, as a preferred embodiment, on the basis of the above method, further, the cooling structure 7 includes a liquid storage box 701 provided in the installation box 6. A refrigeration plate 702 is fixedly connected in the liquid storage box 701. A group of flow guide plates 703 are fixedly connected in a staggered manner on the upper end surface of the refrigeration plate 702. Two semiconductor refrigeration chips 704 are symmetrically and fixedly connected to the lower end surface of the refrigeration plate 702. A heat dissipation fan 705 is installed at the heat dissipation end of the semiconductor refrigeration chip 704. A micro pump 706 is fixedly connected in the installation box 6. The input end of the micro pump 706 is communicated with the liquid storage box 701 through a connecting pipe 707. The output end of the micro pump 706 is fixedly connected to an output pipe 708. The end of the output pipe 708 is fixedly connected to a cooling pipe 709, and the cooling pipe 709 is in contact with the bottom of the energy storage body 1. The other end of the cooling pipe 709 is communicated with the liquid storage box 701 through a return pipe 7010; the micro pump 706 drives the coolant to circulate in the system. After being cooled by the refrigeration plate 702, it directly contacts the bottom of the energy storage body 1 through the cooling pipe 709 for heat exchange, and then returns to the liquid storage box 701 through the return pipe 7010 to complete a cycle. The semiconductor refrigeration chip 704 facilitates the cooling of the refrigeration plate 702, thereby facilitating the cooling treatment of the coolant.

[0032] As shown in Figure 3As shown, as a preferred embodiment, on the basis of the above method, further, two fixing ears 7011 are symmetrically and fixedly connected to the front and rear side walls of the liquid storage box 701. The fixing ears 7011 are detachably connected to the fixing columns 7012 by screws, and the fixing columns 7012 are fixedly connected to the installation box 6; the liquid storage box 701 can be conveniently installed through the fixing ears 7011 and the fixing columns 7012.

[0033] As Figure 1 , Figure 2 and Figure 6 shown, as a preferred embodiment, on the basis of the above method, further, the shock absorption structure 8 includes a group of first mounting heads 801 fixed to both ends of the installation box 6. A second mounting head 802 is provided on the lower side of each first mounting head 801. An assembly head 803 is provided in each of the first mounting head 801 and the second mounting head 802. A nut 804 is threadedly connected to the assembly head 803. A damping rod 805 is fixedly connected between the adjacent upper and lower assembly heads 803. A spring 806 is sleeved outside the damping rod 805. The upper and lower ends of the spring 806 are respectively fixedly connected to the assembly head 803. The bottom end of the second mounting head 802 is fixedly connected to a bottom plate 807; through the combined action of the damping rod 805 and the spring 806, the vibration and impact from the outside can be effectively absorbed and dispersed, and the installation and disassembly are convenient through the assembly head 803 and the nut 804.

[0034] As Figure 2 shown, as a preferred embodiment, on the basis of the above method, further, a rubber pad 808 is fixedly connected to the lower end surface of the bottom plate 807, and anti-slip lines are provided on the bottom surface of the rubber pad 808; the shock absorption effect is further improved, and the anti-slip lines can also increase the stability during placement.

[0035] As Figure 1 shown, as a preferred embodiment, on the basis of the above method, further, a group of heat dissipation holes 9 are provided on the left and right side walls of the installation box 6; the heat dissipation holes 9 facilitate the discharge of the heat dissipated by the semiconductor refrigeration sheet 704 to the outside.

[0036] Specifically, when the high-voltage direct-hanging energy storage PCS structure is working / being used: when cooling is required, the micro pump 706 is started to convey the coolant in the liquid storage box 701 to the cooling pipe 709. The cooling pipe 709 directly contacts the bottom of the energy storage body 1 for heat exchange, and then returns to the liquid storage box 701 through the return pipe 7010 to complete a cycle. The coolant returns to the liquid storage box 701 and flows in an S shape through the guide plate 703. At the same time, the semiconductor refrigeration sheet 704 is started to cool the refrigeration plate 702, thereby cooling the coolant. At the same time, the cooling fan 705 timely discharges the heat generated by the semiconductor refrigeration sheet 704 to maintain its continuous and efficient refrigeration performance; when affected by external vibrations, the damping rod 805 and the spring 806 work together to effectively absorb and disperse the external vibrations and impacts, protecting the energy storage body 1 from damage and avoiding resonance of internal components.

[0037] All technical features in this embodiment can be freely combined according to actual needs.

[0038] The above embodiment is a preferred implementation scheme of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the technical solution is within the protection scope of the present invention.

Claims

1. A high-voltage direct-connected energy storage PCS structure, comprising an energy storage body (1), characterized in that, A cover plate (2) is provided on the upper side of the energy storage body (1). A panel (3) is installed at the front end of the energy storage body (1). An exhaust structure (4) is installed on the panel (3). A handle (5) is fixedly connected to the panel (3). The lower end surface of the energy storage body (1) is detachably connected to an installation box (6) by screws. A cooling structure (7) is provided in the installation box (6). Shock-absorbing structures (8) are provided on both sides of the installation box (6).

2. The structure of a high-voltage direct-connected energy storage PCS according to claim 1, wherein The cooling structure (7) includes a liquid storage box (701) provided in the installation box (6). A refrigeration plate (702) is fixedly connected in the liquid storage box (701). A group of flow guide plates (703) are fixedly connected in a staggered manner on the upper end surface of the refrigeration plate (702). Two semiconductor refrigeration chips (704) are symmetrically and fixedly connected to the lower end surface of the refrigeration plate (702). A heat dissipation fan (705) is installed at the heat dissipation end of the semiconductor refrigeration chip (704). A micro pump (706) is fixedly connected in the installation box (6). The input end of the micro pump (706) is communicated with the liquid storage box (701) through a connecting pipe (707). The output end of the micro pump (706) is fixedly connected to an output pipe (708). The end of the output pipe (708) is fixedly connected to a cooling pipe (709), and the cooling pipe (709) is in contact with the bottom of the energy storage body (1). The other end of the cooling pipe (709) is communicated with the liquid storage box (701) through a return pipe (7010).

3. The high-voltage direct-connected energy storage PCS structure according to claim 2, characterized in that, Two fixing ears (7011) are symmetrically and fixedly connected to the front and rear side walls of the liquid storage box (701). The fixing ears (7011) are detachably connected to fixing columns (7012) by screws. The fixing columns (7012) are fixedly connected to the installation box (6).

4. A high-voltage direct-connected energy storage PCS structure according to claim 1, characterized in that, The shock-absorbing structure (8) includes a group of first mounting heads (801) fixed at both ends of the installation box (6). Second mounting heads (802) are provided below the first mounting heads (801). Fitting heads (803) are provided in both the first mounting heads (801) and the second mounting heads (802). Nuts (804) are threadedly connected to the fitting heads (803). Damping rods (805) are fixedly connected between the adjacent upper and lower fitting heads (803). Springs (806) are sleeved outside the damping rods (805). The upper and lower ends of the springs (806) are respectively fixedly connected to the fitting heads (803). The bottom end of the second mounting head (802) is fixedly connected to a bottom plate (807).

5. A high-voltage direct-connected energy storage PCS structure according to claim 4, characterized in that, A rubber pad (808) is fixedly connected to the lower end surface of the bottom plate (807). Anti-slip lines are provided on the bottom surface of the rubber pad (808).

6. A high-voltage direct-connected energy storage PCS structure according to claim 1, characterized in that, A group of heat dissipation holes (9) are opened on the left and right side walls of the installation box (6).

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